Common Weakness Enumeration
CWE-347
AllowedImproper Verification of Cryptographic Signature
Abstraction: Base · Status: Draft
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
1398 vulnerabilities reference this CWE, most recent first.
CVE-2026-82645 (GCVE-0-2026-82645)
Vulnerability from cvelistv5 – Published: 2026-08-30 14:33 – Updated: 2026-08-31 16:48
VLAI
EPSS
VEX
Title
AVideo Unauthenticated Stream Credential Disclosure via Forgeable Token
Summary
AVideo (current commit e01e41ecc and earlier) exposes stream credentials through the plugin/Live/view/Live_restreams/getLiveKey.json.php endpoint. Supplying a 'token' request parameter waives both the Live::canRestream() access gate and the restream ownership check, causing the endpoint to return any restream's stream_key and stream_url (credentials for external platforms such as YouTube, Facebook, and Twitch) without authentication. The token is merely encryptString() of an integer id with no user binding, expiry, or authentication tag. Because encryption uses AES-256-CBC with a deterministic IV and no MAC, and because intval() accepts any string beginning with a digit, an unauthenticated attacker can forge valid tokens using the public encryption oracle in view/url2Embed.json.php, disclosing arbitrary users' stream credentials.
Severity
8.6 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 16:47 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/WWBN/AVideo/security/advisorie… | vendor-advisory |
| https://www.vulncheck.com/advisories/avideo-unaut… | third-party-advisory |
Impacted products
Date Public
2026-08-14 00:00
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CVE-2026-82461 (GCVE-0-2026-82461)
Vulnerability from cvelistv5 – Published: 2026-08-29 16:35 – Updated: 2026-08-31 18:52
VLAI
EPSS
VEX
Title
pac4j-oidc before 6.5.6 Privilege Escalation via Unverified Keycloak Access Token
Summary
pac4j-oidc before 6.5.6 fails to verify access token signatures, issuers, audiences, or expiry when extracting Keycloak realm and client roles. Attackers can forge access tokens with administrative roles paired with valid ID tokens to bypass authorization checks in applications relying on pac4j role validation.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 16:23 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/pac4j/pac4j/commit/2270c3ff70e… | patch |
| https://www.pac4j.org/blog/security-advisory-pac4… | vendor-advisory |
| https://github.com/pac4j/pac4j/blob/pac4j-parent-… | technical-description |
| https://github.com/pac4j/pac4j | product |
| https://www.vulncheck.com/advisories/pac4j-oidc-b… | third-party-advisory |
Impacted products
Date Public
2026-08-24 00:00
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CVE-2026-82454 (GCVE-0-2026-82454)
Vulnerability from cvelistv5 – Published: 2026-08-29 13:47 – Updated: 2026-09-24 14:20
VLAI
EPSS
VEX
Title
Omnivore before android-0.227.0 Authentication Bypass via Apple Sign-in
Summary
The Omnivore API (packages/api) before the fix in commit abf53d6 contains an authentication bypass in Apple sign-in token verification. The decodeAppleToken function extracted the 'alg' field from the attacker-supplied JWT header and passed it as the sole allowed algorithm to jwt.verify(). Using jsonwebtoken v8 (which does not validate key/algorithm compatibility), an attacker can set alg=HS256 and sign a forged token using Apple's publicly available RSA public key as the HMAC secret, bypassing signature verification and impersonating any Apple-linked account.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 16:34 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/omnivore-app/omnivore/pull/4652 | issue-trackingpatch |
| https://github.com/omnivore-app/omnivore/commit/a… | patch |
| https://github.com/omnivore-app/omnivore | product |
| https://www.vulncheck.com/advisories/omnivore-bef… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| omnivore-app | omnivore |
Affected:
0 , < abf53d650875
(git)
|
Date Public
2026-08-25 00:00
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CVE-2026-81717 (GCVE-0-2026-81717)
Vulnerability from cvelistv5 – Published: 2026-08-27 14:51 – Updated: 2026-10-01 15:21
VLAI
EPSS
VEX
Title
openssl_encrypt before 1.4.9 Integrity Bypass via Added Files
Summary
openssl_encrypt (pip package openssl-encrypt) before 1.4.9 contains two weaknesses in the portable USB drive feature, whose threat model treats the removable drive as untrusted (attacker with physical write access). USBDriveCreator._verify_integrity_file only validates files listed in the manifest, so files added to the drive — including a root-level autorun payload — are not detected and integrity verification still passes. Additionally, a globally constant, source-embedded KDF salt (_LEGACY_FIXED_SALT) is used to derive the drive encryption key for any drive lacking a per-drive salt file, defeating precomputation resistance and enabling an offline rainbow-table attack.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 17:37 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/jahlives/openssl_encrypt/secur… | vendor-advisory |
| https://www.vulncheck.com/advisories/openssl-encr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jahlives | openssl_encrypt |
Affected:
0 , < 1.4.9
(semver)
Unaffected: 1.4.9 (semver) cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:*:*:* |
Date Public
2026-08-12 00:00
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CVE-2026-81714 (GCVE-0-2026-81714)
Vulnerability from cvelistv5 – Published: 2026-08-27 14:51 – Updated: 2026-10-01 15:21
VLAI
EPSS
VEX
Title
openssl_encrypt before 1.4.9 Plugin Signing Trust Anchor Enrollment Bypass
Summary
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 18:21 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/jahlives/openssl_encrypt/secur… | vendor-advisory |
| https://www.vulncheck.com/advisories/openssl-encr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jahlives | openssl_encrypt |
Affected:
0 , < 1.4.9
(semver)
Unaffected: 1.4.9 (semver) cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:*:*:* |
Date Public
2026-08-12 00:00
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CVE-2026-81701 (GCVE-0-2026-81701)
Vulnerability from cvelistv5 – Published: 2026-08-27 14:51 – Updated: 2026-10-01 15:21
VLAI
EPSS
VEX
Title
openssl_encrypt before 1.4.9 Arbitrary Code Execution via unsigned plugin
Summary
openssl_encrypt versions before 1.4.9 use a denylist to identify trusted built-in plugins, allowing unsigned plugins in top-level plugins/ directories and unknown subdirectories to bypass signature verification. Attackers can place malicious unsigned plugins following documented installation paths to achieve arbitrary code execution in the CLI process with access to passwords and cryptographic keys.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 17:40 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/jahlives/openssl_encrypt/secur… | vendor-advisory |
| https://www.vulncheck.com/advisories/openssl-encr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jahlives | openssl_encrypt |
Affected:
0 , < 1.4.9
(semver)
Unaffected: 1.4.9 (semver) cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:*:*:* |
Date Public
2026-08-12 00:00
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CVE-2026-81700 (GCVE-0-2026-81700)
Vulnerability from cvelistv5 – Published: 2026-08-27 14:51 – Updated: 2026-10-01 15:21
VLAI
EPSS
VEX
Title
openssl_encrypt before 1.4.9 GPG Signature Verification Bypass
Summary
openssl_encrypt versions before 1.4.9 contain a signature verification vulnerability in gpg_runner.verify_detached that accepts revoked and expired keys by only checking VALIDSIG status without inspecting REVKEYSIG, EXPKEYSIG, or gpg exit codes. Attackers holding compromised-then-revoked signing keys or expired project keys can bypass signature verification to execute malicious plugins in the host process.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 19:26 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/jahlives/openssl_encrypt/secur… | vendor-advisory |
| https://www.vulncheck.com/advisories/openssl-encr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jahlives | openssl_encrypt |
Affected:
0 , < 1.4.9
(semver)
Unaffected: 1.4.9 (semver) cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:*:*:* |
Date Public
2026-08-12 00:00
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CVE-2026-81680 (GCVE-0-2026-81680)
Vulnerability from cvelistv5 – Published: 2026-08-27 14:50 – Updated: 2026-10-01 15:21
VLAI
EPSS
VEX
Title
openssl_encrypt before 1.4.9 Authentication Bypass via Recovery Slot Removal
Summary
openssl_encrypt versions before 1.4.9 fail to authenticate recovery-slot presence in envelope-format encrypted files, allowing attackers to remove recovery slots without re-encrypting the payload. Attackers can modify the file header to delete recovery-slot fields and bypass authentication, silently removing recovery paths the owner deliberately added.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 19:23 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/jahlives/openssl_encrypt/secur… | vendor-advisory |
| https://www.vulncheck.com/advisories/openssl-encr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jahlives | openssl_encrypt |
Affected:
0 , < 1.4.9
(semver)
Unaffected: 1.4.9 (semver) cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:*:*:* |
Date Public
2026-08-12 00:00
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CVE-2026-80469 (GCVE-0-2026-80469)
Vulnerability from cvelistv5 – Published: 2026-09-11 08:27 – Updated: 2026-09-11 14:06
VLAI
EPSS
VEX
Title
CVE-2026-80469
Summary
An attacker may achieve arbitrary code execution on a target system by uploading a malicious device driver package, bypassing driver verification mechanisms, and triggering the execution of
attacker-controlled code. User interaction is required.
Severity
8.3 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 13:55 UTC
CWE
- CWE-347 - Improper verification of cryptographic signature
References
6 references
| URL | Tags |
|---|---|
| https://www.sick.com/psirt | x_SICK PSIRT Security Advisories |
| https://www.sick.com/media/docs/9/19/719/special_… | x_SICK Operating Guidelines |
| https://www.cisa.gov/resources-tools/resources/ic… | x_ICS-CERT recommended practices on Industrial Security |
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| https://www.sick.com/.well-known/csaf/white/2026/… | x_The canonical URL. |
| https://www.sick.com/.well-known/csaf/white/2026/… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SICK AG | Sentio Creator Extension 'Device Manager' |
Affected:
0 , ≤ 1.4
(custom)
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CVE-2026-80465 (GCVE-0-2026-80465)
Vulnerability from cvelistv5 – Published: 2026-09-03 11:25 – Updated: 2026-09-03 18:15
VLAI
EPSS
VEX
Summary
A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions < V4.2.3), Mendix SAML (Mendix 11 compatible) (All versions < V4.2.3), Mendix SAML (Mendix 9.24 compatible) (All versions < V3.6.27). Affected versions of the module do not properly validate the SAML response signature. This could allow unauthenticated remote attackers to hijack an account (session) in specific SSO configurations.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 18:15 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | Mendix SAML (Mendix 10 compatible) |
Affected:
0 , < V4.2.3
(custom)
|
|
| Siemens | Mendix SAML (Mendix 11 compatible) |
Affected:
0 , < V4.2.3
(custom)
|
|
| Siemens | Mendix SAML (Mendix 9.24 compatible) |
Affected:
0 , < V3.6.27
(custom)
|
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No mitigation information available for this CWE.
CAPEC-463: Padding Oracle Crypto Attack
An adversary is able to efficiently decrypt data without knowing the decryption key if a target system leaks data on whether or not a padding error happened while decrypting the ciphertext. A target system that leaks this type of information becomes the padding oracle and an adversary is able to make use of that oracle to efficiently decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). In addition to performing decryption, an adversary is also able to produce valid ciphertexts (i.e., perform encryption) by using the padding oracle, all without knowing the encryption key.
CAPEC-475: Signature Spoofing by Improper Validation
An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.