Common Weakness Enumeration
CWE-340
Allowed-with-ReviewGeneration of Predictable Numbers or Identifiers
Abstraction: Class · Status: Incomplete
The product uses a scheme that generates numbers or identifiers that are more predictable than required.
84 vulnerabilities reference this CWE, most recent first.
CVE-2024-12034 (GCVE-0-2024-12034)
Vulnerability from cvelistv5 – Published: 2024-12-24 05:23 – Updated: 2026-04-08 16:35
VLAI
EPSS
VEX
Title
Advanced Google reCAPTCHA <= 1.25 - Brute Force Protection IP Unblock
Summary
The Advanced Google reCAPTCHA plugin for WordPress is vulnerable to IP unblocking in all versions up to, and including, 1.25. This is due to the plugin not utilizing a strong unique key when generating an unblock request. This makes it possible for unauthenticated attackers to unblock their IP after being locked out due to too many bad password attempts
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-24 16:36 UTC
CWE
- CWE-340 - Generation of Predictable Numbers or Identifiers
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| webfactory | Advanced Google reCAPTCHA |
Affected:
0 , ≤ 1.25
(semver)
|
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CVE-2024-10603 (GCVE-0-2024-10603)
Vulnerability from cvelistv5 – Published: 2025-01-30 19:14 – Updated: 2025-02-24 11:59
VLAI
EPSS
VEX
Summary
Weaknesses in the generation of TCP/UDP source ports and some other header values in Google's gVisor allowed them to be predicted by an external attacker in some circumstances.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-30 20:31 UTC
CWE
Assigner
References
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CVE-2024-7558 (GCVE-0-2024-7558)
Vulnerability from cvelistv5 – Published: 2024-10-02 10:06 – Updated: 2024-10-02 13:59
VLAI
EPSS
VEX
Summary
JUJU_CONTEXT_ID is a predictable authentication secret. On a Juju machine (non-Kubernetes) or Juju charm container (on Kubernetes), an unprivileged user in the same network namespace can connect to an abstract domain socket and guess the JUJU_CONTEXT_ID value. This gives the unprivileged user access to the same information and tools as the Juju charm.
Severity
8.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-02 13:58 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/juju/juju/security/advisories/… | issue-tracking |
| https://www.cve.org/CVERecord?id=CVE-2024-7558 | issue-tracking |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical Ltd. | Juju |
Affected:
3.5 , < 3.5.4
(semver)
Affected: 3.4 , < 3.4.6 (semver) Affected: 3.3 , < 3.3.7 (semver) Affected: 3.1 , < 3.1.10 (semver) Affected: 2.9 , < 2.9.51 (semver) |
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CVE-2021-29480 (GCVE-0-2021-29480)
Vulnerability from cvelistv5 – Published: 2021-06-29 18:15 – Updated: 2024-08-03 22:11
VLAI
EPSS
VEX
Title
Default client side session signing key is highly predictable
Summary
Ratpack is a toolkit for creating web applications. In versions prior to 1.9.0, the client side session module uses the application startup time as the signing key by default. This means that if an attacker can determine this time, and if encryption is not also used (which is recommended, but is not on by default), the session data could be tampered with by someone with the ability to write cookies. The default configuration is unsuitable for production use as an application restart renders all sessions invalid and is not multi-host compatible, but its use is not actively prevented. As of Ratpack 1.9.0, the default value is a securely randomly generated value, generated at application startup time. As a workaround, supply an alternative signing key, as per the documentation's recommendation.
Severity
4.4 (Medium)
CWE
- CWE-340 - Generation of Predictable Numbers or Identifiers
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ratpack/ratpack/security/advis… | x_refsource_CONFIRM |
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CVE-2020-1905 (GCVE-0-2020-1905)
Vulnerability from cvelistv5 – Published: 2020-10-06 17:35 – Updated: 2024-08-04 06:53
VLAI
EPSS
VEX
Summary
Media ContentProvider URIs used for opening attachments in other apps were generated sequentially prior to WhatsApp for Android v2.20.185, which could have allowed a malicious third party app chosen to open the file to guess the URIs for previously opened attachments until the opener app is terminated.
Severity
No CVSS data available.
CWE
- CWE-340 - Generation of Predictable Numbers or Identifiers
References
1 reference
| URL | Tags |
|---|---|
| https://www.whatsapp.com/security/advisories/2020/ | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| WhatsApp for Android |
Affected:
2.20.185
Affected: unspecified , < 2.20.185 (custom) |
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GHSA-2CC5-23R7-VC4V
Vulnerability from github – Published: 2021-07-01 17:02 – Updated: 2022-08-11 00:17
VLAI
Summary
Ratpack's default client side session signing key is highly predictable
Details
Impact
The client side session module uses the application startup time as the signing key by default. This means that if an attacker can determine this time, and if encryption is not also used (which is recommended, but is not on by default), the session data could be tampered with by someone with the ability to write cookies.
The default configuration is unsuitable for production use as an application restart renders all sessions invalid and is not multi-host compatible, but its use is not actively prevented.
Vulnerability Location
https://github.com/ratpack/ratpack/blob/29434f7ac6fd4b36a4495429b70f4c8163100332/ratpack-session/src/main/java/ratpack/session/clientside/ClientSideSessionConfig.java#L29
Patches
As of Ratpack 1.9.0 the default value is a securely randomly generated value, generated at application startup time.
Workarounds
Supply an alternative signing key, as per the documentation's recommendation.
Severity
4.4 (Medium)
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "io.ratpack:ratpack-session"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.9.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-29480"
],
"database_specific": {
"cwe_ids": [
"CWE-330",
"CWE-340"
],
"github_reviewed": true,
"github_reviewed_at": "2021-06-30T17:49:41Z",
"nvd_published_at": "2021-06-29T19:15:00Z",
"severity": "MODERATE"
},
"details": "### Impact\n\nThe client side session module uses the application startup time as the signing key by default. This means that if an attacker can determine this time, and if encryption is not also used (which is recommended, but is not on by default), the session data could be tampered with by someone with the ability to write cookies. \n\nThe default configuration is unsuitable for production use as an application restart renders all sessions invalid and is not multi-host compatible, but its use is not actively prevented.\n\n### Vulnerability Location\n\nhttps://github.com/ratpack/ratpack/blob/29434f7ac6fd4b36a4495429b70f4c8163100332/ratpack-session/src/main/java/ratpack/session/clientside/ClientSideSessionConfig.java#L29\n\n### Patches\n\nAs of Ratpack 1.9.0 the default value is a securely randomly generated value, generated at application startup time. \n\n### Workarounds\n\nSupply an alternative signing key, as per the documentation\u0027s recommendation.\n",
"id": "GHSA-2cc5-23r7-vc4v",
"modified": "2022-08-11T00:17:56Z",
"published": "2021-07-01T17:02:26Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/ratpack/ratpack/security/advisories/GHSA-2cc5-23r7-vc4v"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29480"
},
{
"type": "PACKAGE",
"url": "https://github.com/ratpack/ratpack"
},
{
"type": "WEB",
"url": "https://github.com/ratpack/ratpack/blob/29434f7ac6fd4b36a4495429b70f4c8163100332/ratpack-session/src/main/java/ratpack/session/clientside/ClientSideSessionConfig.java#L29"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
],
"summary": "Ratpack\u0027s default client side session signing key is highly predictable"
}
GHSA-2VV3-69QG-3HGR
Vulnerability from github – Published: 2026-08-20 09:31 – Updated: 2026-08-20 09:31
VLAI
Details
The application generates uploaded file names using a weak and predictable method based on the request timestamp. This allows a remote attacker to accurately guess or brute-force the generated filename within a short time window. An attacker can successfully locate and access uploaded files, which can be used to facilitate further attacks.
Apply patch from vendor https://vsdesk.ru/ . Versions 14.0101 and on have the patch.
Severity
{
"affected": [],
"aliases": [
"CVE-2025-14602"
],
"database_specific": {
"cwe_ids": [
"CWE-340"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-20T07:16:30Z",
"severity": "MODERATE"
},
"details": "The application generates uploaded file names using a weak and predictable method based on the request timestamp. This allows a remote attacker to accurately guess or brute-force the generated filename within a short time window.\u00a0An attacker can successfully locate and access uploaded files, which can be used to facilitate further attacks.\n\n\n\n\nApply patch from vendor https://vsdesk.ru/ . Versions 14.0101 and on have the patch.",
"id": "GHSA-2vv3-69qg-3hgr",
"modified": "2026-08-20T09:31:16Z",
"published": "2026-08-20T09:31:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-14602"
},
{
"type": "WEB",
"url": "https://github.com/klsecservices/Advisories/blob/master/KLSA-00294-Weak-File-Name-Generation-in-vsDesk.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/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-32VV-MWC8-CH6P
Vulnerability from github – Published: 2026-04-07 03:30 – Updated: 2026-04-07 03:30
VLAI
Details
IBM Concert 1.0.0 through 2.2.0 creates temporary files with predictable names, which allows local users to overwrite arbitrary files via a symlink attack.
Severity
6.2 (Medium)
{
"affected": [],
"aliases": [
"CVE-2025-13044"
],
"database_specific": {
"cwe_ids": [
"CWE-340"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-07T02:16:15Z",
"severity": "MODERATE"
},
"details": "IBM Concert 1.0.0 through 2.2.0 creates temporary files with predictable names, which allows local users to overwrite arbitrary files via a symlink attack.",
"id": "GHSA-32vv-mwc8-ch6p",
"modified": "2026-04-07T03:30:24Z",
"published": "2026-04-07T03:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13044"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/7268620"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-3J74-GJWG-45JM
Vulnerability from github – Published: 2026-08-17 21:31 – Updated: 2026-08-17 21:31
VLAI
Details
OpnForm derives editable-submission secrets from sequential row identifiers using Hashids with an empty default salt, allowing unauthenticated attackers to compute hashes for any submission. Attackers can read other respondents' full submission data through the submission-fetch endpoint or overwrite submissions by supplying predicted hashes to the answer endpoint.
Severity
9.1 (Critical)
{
"affected": [],
"aliases": [
"CVE-2026-75106"
],
"database_specific": {
"cwe_ids": [
"CWE-340"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-17T21:16:49Z",
"severity": "CRITICAL"
},
"details": "OpnForm derives editable-submission secrets from sequential row identifiers using Hashids with an empty default salt, allowing unauthenticated attackers to compute hashes for any submission. Attackers can read other respondents\u0027 full submission data through the submission-fetch endpoint or overwrite submissions by supplying predicted hashes to the answer endpoint.",
"id": "GHSA-3j74-gjwg-45jm",
"modified": "2026-08-17T21:31:26Z",
"published": "2026-08-17T21:31:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-75106"
},
{
"type": "WEB",
"url": "https://github.com/OpnForm/OpnForm/issues/1259"
},
{
"type": "WEB",
"url": "https://github.com/OpnForm/OpnForm/commit/6c67ff0a9bc0ac27ae26b32b8e108a176f8161b1"
},
{
"type": "WEB",
"url": "https://github.com/OpnForm/OpnForm"
},
{
"type": "WEB",
"url": "https://github.com/OpnForm/OpnForm/releases/tag/v2.0.2"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/opnform-editable-submission-secret-derivation-via-empty-hashids-salt"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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-3QFW-5G24-8PMQ
Vulnerability from github – Published: 2024-10-15 12:30 – Updated: 2025-11-04 00:31
VLAI
Details
The devices are vulnerable to session hijacking due to insufficient entropy in its session ID generation algorithm. The session IDs are predictable, with only 32,768 possible values per user, which allows attackers to pre-generate valid session IDs, leading to unauthorized access to user sessions. This is not only due to the use of an (insecure) rand() function call but also because of missing initialization via srand(). As a result only the PIDs are effectively used as seed.
Severity
9.1 (Critical)
{
"affected": [],
"aliases": [
"CVE-2024-47945"
],
"database_specific": {
"cwe_ids": [
"CWE-331",
"CWE-340"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-15T10:15:03Z",
"severity": "CRITICAL"
},
"details": "The devices are vulnerable to session hijacking due to insufficient \nentropy in its session ID generation algorithm. The session IDs are \npredictable, with only 32,768 possible values per user, which allows \nattackers to pre-generate valid session IDs, leading to unauthorized \naccess to user sessions. This is not only due to the use of an \n(insecure) rand() function call but also because of missing \ninitialization via srand(). As a result only the PIDs are effectively \nused as seed.",
"id": "GHSA-3qfw-5g24-8pmq",
"modified": "2025-11-04T00:31:34Z",
"published": "2024-10-15T12:30:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47945"
},
{
"type": "WEB",
"url": "https://r.sec-consult.com/rittaliot"
},
{
"type": "WEB",
"url": "https://www.rittal.com/de-de/products/deep/3124300"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2024/Oct/4"
}
],
"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"
}
]
}
No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.