Common Weakness Enumeration

CWE-338

Allowed

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong.

340 vulnerabilities reference this CWE, most recent first.

GHSA-RC7V-65V6-M2V3

Vulnerability from github – Published: 2024-10-28 15:12 – Updated: 2024-11-08 17:25
Withdrawn 2024-11-08 VLAI
Summary
Withdrawn Advisory: go-mysql affected by go.uuid's Predictable UUID Identifiers
Details

Withdrawn Advisory

This advisory has been withdrawn because the vulnerability does not affect a released version of the github.com/go-mysql-org/go-mysql package. For more information, see https://github.com/github/advisory-database/pull/4990.

Original Advisory

Affected by CVE-2021-3538

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/go-mysql-org/go-mysql"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.5.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-338"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-10-28T15:12:22Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "## Withdrawn Advisory\n\nThis advisory has been withdrawn because the vulnerability does not affect a released version of the `github.com/go-mysql-org/go-mysql` package.  For more information, see https://github.com/github/advisory-database/pull/4990.\n\n## Original Advisory\n\nAffected by CVE-2021-3538",
  "id": "GHSA-rc7v-65v6-m2v3",
  "modified": "2024-11-08T17:25:16Z",
  "published": "2024-10-28T15:12:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/apptainer/sif/security/advisories/GHSA-33m6-q9v5-62r7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/go-mysql-org/go-mysql/security/advisories/GHSA-rc7v-65v6-m2v3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/hpcng/sif/security/advisories/GHSA-33m6-q9v5-62r7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/github/advisory-database/pull/4990"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/go-mysql-org/go-mysql"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Withdrawn Advisory: go-mysql affected by go.uuid\u0027s Predictable UUID Identifiers",
  "withdrawn": "2024-11-08T17:25:16Z"
}

GHSA-RG76-677X-56Q9

Vulnerability from github – Published: 2026-08-07 18:48 – Updated: 2026-08-07 18:48
VLAI
Summary
crypto-js: Insufficient Entropy in Cryptographic Secret Generation via Vulnerable CryptoJS Dependency Chain
Details

Summary

CryptoJS.lib.WordArray.random() in affected versions is not a cryptographically secure random number generator. Nominal requests for 128 or 256 bits of entropy produce effective search spaces of approximately 2^39 and 2^47 possibilities — small enough to enumerate on commodity hardware.

Coinspect's Ill Bloom investigation confirmed that downstream wallet applications used this function as the entropy source for BIP39 recovery phrases.

An application is affected only if it uses the vulnerable function to generate security-sensitive values.

Merely depending on crypto-js < 4.0.0 is not sufficient to be exploitable.

Details

The affected implementation used a custom variation of George Marsaglia's Multiply-With-Carry PRNG, seeded from Math.random(). It was introduced in 3.1.2-4 (June 2014, commit brix/crypto-js@ff1f003) in response to issue #7, and was present in every 3.x release except 3.2.0 and 3.2.1. That change was reverted in 3.3.0 because it was considered a breaking change, so projects tracking the 3.x line could resolve to newer versions that still contained the weak generator.

4.0.0 replaced the generator with the platform's native cryptographic API.

Applying PBKDF2, another KDF, or a cryptographic hash after the vulnerable generator does not restore missing entropy.

Proof of concept

Coinspect reproduced the attack end to end:

  1. Reimplemented the affected WordArray.random() behavior.
  2. Enumerated the feasible outputs of the underlying PRNG.
  3. Converted candidate entropy values into valid BIP39 recovery phrases.
  4. Derived private keys and addresses across the relevant derivation paths and networks.
  5. Compared derived addresses against public blockchain data.
  6. Recovered the private keys controlling funded addresses.

Impact

An attacker can enumerate the reduced output space and recover security-sensitive values generated through the affected function.

Coinspect documented coordinated drain waves affecting addresses derived from vulnerable recovery phrases. As of July 13, 2026, the measured lower bound of stolen assets across the two events was approximately $5M.

The consequences are persistent:

  • Updating an affected library or wallet does not strengthen a previously generated secret.
  • Importing the same recovery phrase into an updated software or hardware wallet does not remediate the issue.
  • Previously generated secrets may remain exploitable indefinitely.
  • Future deposits to an affected address may also be stolen.
  • Assets may remain exposed across networks or derivation paths that have not yet shown suspicious activity.

Remediation

For projects:

  1. Upgrade crypto-js to version 4.0.0 or later. Where possible, replace CryptoJS randomness with the native Web Crypto API or Node.js crypto module.
  2. Audit direct, downstream, and transitive dependencies for versions of crypto-js matching < 4.0.0.
  3. Determine whether CryptoJS.lib.WordArray.random() was used to generate any security-sensitive values.
  4. Identify the time periods and application versions during which the vulnerable generation path was present.
  5. Treat all long-term secrets generated through an affected path as compromised and rotate them.
  6. Notify affected users that installing an update is insufficient when a long-term secret was generated by the vulnerable code.

For wallet users: create a new wallet with a newly generated recovery phrase from a trustworthy source and migrate assets to addresses derived from it. Do not import the existing recovery phrase into the new wallet.

Public address checker

Coinspect provides a public checker for addresses identified in the known Ill Bloom exposed-address datasets:

https://illbloom.org/

Only public blockchain addresses should be entered. Users must never enter a recovery phrase, seed phrase, mnemonic, private key, password, or wallet backup file.

A match indicates that funds controlled by the same recovery phrase may be at immediate risk. A negative result only means that the submitted address was not found in the currently published datasets.

References

Severity
9.0 (Critical)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "crypto-js"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-71851"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-331",
      "CWE-334",
      "CWE-338"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-07T18:48:59Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "### Summary\n\n`CryptoJS.lib.WordArray.random()` in affected versions is not a cryptographically secure random number generator. Nominal requests for 128 or 256 bits of entropy produce effective search spaces of approximately 2^39 and 2^47 possibilities \u2014 small enough to enumerate on commodity hardware.\n\nCoinspect\u0027s [Ill Bloom](https://www.coinspect.com/blog/ill-bloom-investigation/) investigation confirmed that downstream wallet applications used this function as the entropy source for BIP39 recovery phrases.\n\n**An application is affected only if it uses the vulnerable function to generate security-sensitive values.** \n\nMerely depending on `crypto-js \u003c 4.0.0` is not sufficient to be exploitable.\n\n### Details\n\nThe affected implementation used a custom variation of George Marsaglia\u0027s Multiply-With-Carry PRNG, seeded from `Math.random()`. It was introduced in 3.1.2-4 (June 2014, commit brix/crypto-js@ff1f003) in response to issue \\#7, and was present in every 3.x release except 3.2.0 and 3.2.1. That **change was reverted in 3.3.0** because it was considered a breaking change, so projects tracking the 3.x line could resolve to newer versions that still contained the weak generator. \n\n4.0.0 replaced the generator with the platform\u0027s native cryptographic API.\n\nApplying PBKDF2, another KDF, or a cryptographic hash after the vulnerable generator does not restore missing entropy.\n\n### Proof of concept\n\nCoinspect reproduced the attack end to end:\n\n1. Reimplemented the affected `WordArray.random()` behavior.  \n2. Enumerated the feasible outputs of the underlying PRNG.  \n3. Converted candidate entropy values into valid BIP39 recovery phrases.  \n4. Derived private keys and addresses across the relevant derivation paths and networks.  \n5. Compared derived addresses against public blockchain data.  \n6. Recovered the private keys controlling funded addresses.\n\n### Impact\n\nAn attacker can enumerate the reduced output space and recover security-sensitive values generated through the affected function.\n\nCoinspect documented coordinated drain waves affecting addresses derived from vulnerable recovery phrases. As of July 13, 2026, the measured lower bound of stolen assets across the two events was approximately $5M.\n\nThe consequences are persistent:\n\n* Updating an affected library or wallet does not strengthen a previously generated secret.  \n* Importing the same recovery phrase into an updated software or hardware wallet does not remediate the issue.  \n* Previously generated secrets may remain exploitable indefinitely.  \n* Future deposits to an affected address may also be stolen.  \n* Assets may remain exposed across networks or derivation paths that have not yet shown suspicious activity.\n\n### Remediation\n\n**For projects:**\n\n1. Upgrade `crypto-js` to version `4.0.0` or later. Where possible, replace CryptoJS randomness with the native Web Crypto API or Node.js `crypto` module.  \n2. Audit direct, downstream, and transitive dependencies for versions of `crypto-js` matching `\u003c 4.0.0`.  \n3. Determine whether `CryptoJS.lib.WordArray.random()` was used to generate any security-sensitive values.  \n4. Identify the time periods and application versions during which the vulnerable generation path was present.  \n5. Treat all long-term secrets generated through an affected path as compromised and rotate them.  \n6. Notify affected users that installing an update is insufficient when a long-term secret was generated by the vulnerable code.\n\n**For wallet users:** create a new wallet with a newly generated recovery phrase from a trustworthy source and migrate assets to addresses derived from it. Do not import the existing recovery phrase into the new wallet.\n\n### Public address checker\n\nCoinspect provides a public checker for addresses identified in the known Ill Bloom exposed-address datasets:\n\n[https://illbloom.org/](https://illbloom.org/)\n\nOnly public blockchain addresses should be entered. Users must **never enter a recovery phrase**, seed phrase, mnemonic, private key, password, or wallet backup file.\n\nA match indicates that funds controlled by the same recovery phrase may be at immediate risk. A negative result only means that the submitted address was not found in the currently published datasets.\n\n### References\n\n* Ill Bloom research site and public address checker:  \n  [https://illbloom.org/](https://illbloom.org/)  \n* Coinspect investigation overview:  \n  [https://www.coinspect.com/blog/ill-bloom-investigation/](https://www.coinspect.com/blog/ill-bloom-investigation/)  \n* CryptoJS issue \\#7 \u2014 `randomBytes is not random enough`:  \n  [https://github.com/brix/crypto-js/issues/7](https://github.com/brix/crypto-js/issues/7)  \n* Commit introducing the MWC-based implementation:  \n  [https://github.com/brix/crypto-js/commit/ff1f0032ff58aedfcc44eb6aa7b2c78207a98009](https://github.com/brix/crypto-js/commit/ff1f0032ff58aedfcc44eb6aa7b2c78207a98009)  \n* Changes between CryptoJS `3.3.0` and `4.0.0`:  \n  [https://github.com/brix/crypto-js/compare/3.3.0...4.0.0](https://github.com/brix/crypto-js/compare/3.3.0...4.0.0)  \n* Downstream `ferrumnet/bip39` fork:  \n  [https://github.com/ferrumnet/bip39](https://github.com/ferrumnet/bip39)",
  "id": "GHSA-rg76-677x-56q9",
  "modified": "2026-08-07T18:48:59Z",
  "published": "2026-08-07T18:48:59Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/brix/crypto-js/security/advisories/GHSA-rg76-677x-56q9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/brix/crypto-js/commit/b405ff597fb3ac76a7bdfbc72dca10ba1079b1d5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/brix/crypto-js"
    },
    {
      "type": "WEB",
      "url": "https://www.coinspect.com/blog/ill-bloom-investigation"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "crypto-js: Insufficient Entropy in Cryptographic Secret Generation via Vulnerable CryptoJS Dependency Chain"
}

GHSA-RG9R-F32F-755R

Vulnerability from github – Published: 2023-02-02 00:30 – Updated: 2023-02-08 21:30
VLAI
Details

An issue was discovered in dotCMS core 5.3.8.5 through 5.3.8.15 and 21.03 through 22.10.1. A cryptographically insecure random generation algorithm for password-reset token generation leads to account takeover.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2022-45782"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-338",
      "CWE-640"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-02-01T22:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "An issue was discovered in dotCMS core 5.3.8.5 through 5.3.8.15 and 21.03 through 22.10.1. A cryptographically insecure random generation algorithm for password-reset token generation leads to account takeover.",
  "id": "GHSA-rg9r-f32f-755r",
  "modified": "2023-02-08T21:30:19Z",
  "published": "2023-02-02T00:30:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-45782"
    },
    {
      "type": "WEB",
      "url": "https://www.dotcms.com/security/SI-66"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-RGH6-HJMR-J5FV

Vulnerability from github – Published: 2021-12-26 00:00 – Updated: 2022-01-11 00:02
VLAI
Details

In NetBSD through 9.2, the IPv6 Flow Label generation algorithm employs a weak cryptographic PRNG.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-45489"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-338"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-12-25T02:15:00Z",
    "severity": "HIGH"
  },
  "details": "In NetBSD through 9.2, the IPv6 Flow Label generation algorithm employs a weak cryptographic PRNG.",
  "id": "GHSA-rgh6-hjmr-j5fv",
  "modified": "2022-01-11T00:02:10Z",
  "published": "2021-12-26T00:00:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45489"
    },
    {
      "type": "WEB",
      "url": "https://arxiv.org/pdf/2112.09604.pdf"
    },
    {
      "type": "WEB",
      "url": "http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2021-001.txt.asc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-RGQQ-JVQ6-W93R

Vulnerability from github – Published: 2024-09-26 18:31 – Updated: 2024-09-26 18:31
VLAI
Details

The goTenna Pro ATAK Plugin does not use SecureRandom when generating its cryptographic keys. The random function in use is not suitable for cryptographic use.

Severity
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.1 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2024-45723"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-338"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-26T18:15:07Z",
    "severity": "HIGH"
  },
  "details": "The goTenna Pro ATAK Plugin does not use SecureRandom when generating \nits cryptographic keys. The random function in use is not suitable for \ncryptographic use.",
  "id": "GHSA-rgqq-jvq6-w93r",
  "modified": "2024-09-26T18:31:45Z",
  "published": "2024-09-26T18:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45723"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-24-270-05"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-RH95-JWC3-F9FR

Vulnerability from github – Published: 2026-10-01 18:32 – Updated: 2026-10-01 18:32
VLAI
Details

Fortra BoKS Server Agent contains a predictable password generation vulnerability in the adjoin utility. Machine-account passwords generated during Active Directory join or password renewal operations may have significantly less entropy than intended, making them more susceptible to prediction by an attacker who can estimate when the password was generated.

Severity
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-9864"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-338"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-01T16:18:09Z",
    "severity": "MODERATE"
  },
  "details": "Fortra BoKS Server Agent contains a predictable password generation vulnerability in the adjoin utility. Machine-account passwords generated during Active Directory join or password renewal operations may have significantly less entropy than intended, making them more susceptible to prediction by an attacker who can estimate when the password was generated.",
  "id": "GHSA-rh95-jwc3-f9fr",
  "modified": "2026-10-01T18:32:43Z",
  "published": "2026-10-01T18:32:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9864"
    },
    {
      "type": "WEB",
      "url": "https://www.fortra.com/security/advisories/product-security/fi-2026-018"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-RJQ9-C3RF-C638

Vulnerability from github – Published: 2026-04-01 21:30 – Updated: 2026-04-01 21:30
VLAI
Details

An issue was discovered in Mbed TLS before 3.6.6 and 4.x before 4.1.0 and TF-PSA-Crypto before 1.1.0. There is a Predictable Seed in a Pseudo-Random Number Generator (PRNG).

Severity
6.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-34871"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-338"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-01T19:16:33Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in Mbed TLS before 3.6.6 and 4.x before 4.1.0 and TF-PSA-Crypto before 1.1.0. There is a Predictable Seed in a Pseudo-Random Number Generator (PRNG).",
  "id": "GHSA-rjq9-c3rf-c638",
  "modified": "2026-04-01T21:30:30Z",
  "published": "2026-04-01T21:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34871"
    },
    {
      "type": "WEB",
      "url": "https://mbed-tls.readthedocs.io/en/latest/security-advisories"
    },
    {
      "type": "WEB",
      "url": "https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-dev-random"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-RMW5-XPG9-JR29

Vulnerability from github – Published: 2021-06-10 17:23 – Updated: 2022-04-27 20:30
VLAI
Summary
Use of Cryptographically Weak Pseudo-Random Number Generator in Rclone
Details

An issue was discovered in Rclone before 1.53.3. Due to the use of a weak random number generator, the password generator has been producing weak passwords with much less entropy than advertised. The suggested passwords depend deterministically on the time the second rclone was started. This limits the entropy of the passwords enormously. These passwords are often used in the crypt backend for encryption of data. It would be possible to make a dictionary of all possible passwords with about 38 million entries per password length. This would make decryption of secret material possible with a plausible amount of effort. NOTE: all passwords generated by affected versions should be changed.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/rclone/rclone"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.53.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-28924"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-331",
      "CWE-338"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-06-09T14:47:19Z",
    "nvd_published_at": "2020-11-19T20:15:00Z",
    "severity": "HIGH"
  },
  "details": "An issue was discovered in Rclone before 1.53.3. Due to the use of a weak random number generator, the password generator has been producing weak passwords with much less entropy than advertised. The suggested passwords depend deterministically on the time the second rclone was started. This limits the entropy of the passwords enormously. These passwords are often used in the crypt backend for encryption of data. It would be possible to make a dictionary of all possible passwords with about 38 million entries per password length. This would make decryption of secret material possible with a plausible amount of effort. NOTE: all passwords generated by affected versions should be changed.",
  "id": "GHSA-rmw5-xpg9-jr29",
  "modified": "2022-04-27T20:30:31Z",
  "published": "2021-06-10T17:23:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-28924"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rclone/rclone/issues/4783"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rclone/rclone"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIFT24Q6EFXLQZ24AER2QGFFZLMIPCD"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202107-14"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Use of Cryptographically Weak Pseudo-Random Number Generator in Rclone"
}

GHSA-RQ65-66G5-5PG2

Vulnerability from github – Published: 2026-06-23 09:32 – Updated: 2026-06-23 15:32
VLAI
Details

Mojolicious::Plugin::Web::Auth::OAuth2 versions through 0.17 for Perl have an insecure default state parameter.

When no state generator is specified in the constructor, the module defaults to using a SHA-1 hash of predictable and low-entropy sources, including the epoch time (which is leaked via the HTTP Date header) and a call to Perl's built-in rand function.

A predictable state allows an attacker to hijack another user's session through cross site request forgery (CSRF).

Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-9733"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-338"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-23T08:16:26Z",
    "severity": "CRITICAL"
  },
  "details": "Mojolicious::Plugin::Web::Auth::OAuth2 versions through 0.17 for Perl have an insecure default state parameter.\n\nWhen no state generator is specified in the constructor, the module defaults to using a SHA-1 hash of predictable and low-entropy sources, including the epoch time (which is leaked via the HTTP Date header) and a call to Perl\u0027s built-in rand function.\n\nA predictable state allows an attacker to hijack another user\u0027s session through cross site request forgery (CSRF).",
  "id": "GHSA-rq65-66g5-5pg2",
  "modified": "2026-06-23T15:32:35Z",
  "published": "2026-06-23T09:32:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9733"
    },
    {
      "type": "WEB",
      "url": "https://datatracker.ietf.org/doc/html/rfc6749#section-10.12"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/HAYAJO/Mojolicious-Plugin-Web-Auth-0.17/source/lib/Mojolicious/Plugin/Web/Auth/OAuth2.pm#L129-131"
    },
    {
      "type": "WEB",
      "url": "https://security.metacpan.org/patches/M/Mojolicious-Plugin-Web-Auth/0.17/CVE-2026-9733-r2.patch"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/06/23/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-RW92-CWM5-WP25

Vulnerability from github – Published: 2026-09-18 21:32 – Updated: 2026-09-18 21:32
VLAI
Details

Cotonti through 1.0.0 derives password recovery validation tokens from md5(microtime()) in users.passrecover.php, creating a predictable token space of approximately one million values per second. Unauthenticated attackers can read the server Date header, precompute candidate tokens within a narrow time window, and probe them against the passrecover authentication endpoint to reset any account password including administrators.

Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.2 (Critical)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-93868"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-338"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-18T20:17:34Z",
    "severity": "CRITICAL"
  },
  "details": "Cotonti through 1.0.0 derives password recovery validation tokens from md5(microtime()) in users.passrecover.php, creating a predictable token space of approximately one million values per second. Unauthenticated attackers can read the server Date header, precompute candidate tokens within a narrow time window, and probe them against the passrecover authentication endpoint to reset any account password including administrators.",
  "id": "GHSA-rw92-cwm5-wp25",
  "modified": "2026-09-18T21:32:27Z",
  "published": "2026-09-18T21:32:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93868"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Cotonti/Cotonti/issues/1890"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Cotonti/Cotonti/pull/1898"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Cotonti/Cotonti"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Cotonti/Cotonti/blob/1.0.0/modules/users/inc/users.passrecover.php"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/cotonti-through-1.0.0-predictable-password-recovery-token-via-weak-prng"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}
Mitigation
Implementation

Use functions or hardware which use a hardware-based random number generation for all crypto. This is the recommended solution. Use CyptGenRandom on Windows, or hw_rand() on Linux.

No CAPEC attack patterns related to this CWE.

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