CWE-347
Improper Verification of Cryptographic Signature
Description
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
Hierarchy (View 1000)
Parents
Children
none
Related attack patterns (CAPEC)
CAPEC-463 · CAPEC-475
CVEs mapped to this weakness (803)
page 5 of 41| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2025-54419 | Cri | 0.58 | 10.0 | 0.00 | Jul 28, 2025 | A SAML library not dependent on any frameworks that runs in Node. In version 5.0.1, Node-SAML loads the assertion from the (unsigned) original response document. This is different than the parts that are verified when checking signature. This allows an attacker to modify… | ||
| CVE-2025-25291 | Cri | 0.58 | 9.8 | 0.20 | Mar 12, 2025 | ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. An authentication bypass vulnerability was found in ruby-saml prior to versions 1.12.4 and 1.18.0 due to a parser differential. ReXML and Nokogiri parse XML differently; the parsers can… | ||
| CVE-2023-25574 | Cri | 0.58 | 10.0 | 0.00 | Feb 25, 2025 | `jupyterhub-ltiauthenticator` is a JupyterHub authenticator for learning tools interoperability (LTI). LTI13Authenticator that was introduced in `jupyterhub-ltiauthenticator` 1.3.0 wasn't validating JWT signatures. This is believed to allow the LTI13Authenticator to authorize a… | ||
| CVE-2024-32962 | Cri | 0.58 | 10.0 | 0.01 | May 2, 2024 | xml-crypto is an xml digital signature and encryption library for Node.js. In affected versions the default configuration does not check authorization of the signer, it only checks the validity of the signature per section 3.2.2 of the w3 xmldsig-core-20080610 spec. As such,… | ||
| CVE-2026-18108 | Cri | 0.57 | 9.8 | 0.00 | Aug 3, 2026 | Net::SAML2 versions before 0.86 for Perl allow authentication bypass because _verify_encrypted_assertion accepts an EncryptedAssertion whose decrypted content carries no signature. _verify_encrypted_assertion decrypts the EncryptedAssertion and returns it as verified when it… | ||
| CVE-2025-41669 | Hig | 0.57 | 8.8 | 0.00 | May 27, 2026 | The Web-based Management allows a remote low privileged Engineer user to install additional APPs on the device downloaded from the PLCnext Store without implementing any data verification mechanism, leading to the capability for an Engineer user to reach arbitrary code execution… | ||
| CVE-2026-6911 | Cri | 0.57 | 9.8 | 0.00 | Apr 24, 2026 | Missing JWT signature verification in AWS Ops Wheel allows unauthenticated attackers to forge JWT tokens and gain unintended administrative access to the application, including the ability to read, modify, and delete all application data across tenants and manage Cognito user… | ||
| CVE-2026-33746 | Cri | 0.57 | 9.8 | 0.00 | Apr 2, 2026 | Convoy is a KVM server management panel for hosting businesses. From version 3.9.0-beta to before version 4.5.1, the JWTService::decode() method did not verify the cryptographic signature of JWT tokens. While the method configured a symmetric HMAC-SHA256 signer via lcobucci/jwt,… | ||
| CVE-2026-31946 | Cri | 0.57 | 9.8 | 0.00 | Mar 30, 2026 | OpenOlat is an open source web-based e-learning platform for teaching, learning, assessment and communication. From version 10.5.4 to before version 20.2.5, OpenOLAT's OpenID Connect implicit flow implementation does not verify JWT signatures. The JSONWebToken.parse() method… | ||
| CVE-2026-3562 | Hig | 0.57 | 8.8 | 0.00 | Mar 16, 2026 | Philips Hue Bridge hk_hap Ed25519 Signature Verification Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Philips Hue Bridge. Authentication is not required to exploit this… | ||
| CVE-2026-28802 | Cri | 0.57 | 9.8 | 0.00 | Mar 6, 2026 | Authlib is a Python library which builds OAuth and OpenID Connect servers. From version 1.6.5 to before version 1.6.7, previous tests involving passing a malicious JWT containing alg: none and an empty signature was passing the signature verification step without any changes to… | ||
| CVE-2026-25922 | Hig | 0.57 | 8.8 | 0.00 | Feb 12, 2026 | authentik is an open-source identity provider. Prior to 2025.8.6, 2025.10.4, and 2025.12.4, when using a SAML Source that has the option Verify Assertion Signature under Verification Certificate enabled and not Verify Response Signature, or does not have the Encryption… | ||
| CVE-2026-23687 | Hig | 0.57 | 8.8 | 0.00 | Feb 10, 2026 | SAP NetWeaver Application Server ABAP and ABAP Platform allows an authenticated attacker with normal privileges to obtain a valid signed message and send modified signed XML documents to the verifier. This may result in acceptance of tampered identity information, unauthorized… | ||
| CVE-2026-23518 | Cri | 0.57 | 9.8 | 0.00 | Jan 21, 2026 | Fleet is open source device management software. In versions prior to 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3, a vulnerability in Fleet's Windows MDM enrollment flow could allow an attacker to submit forged authentication tokens that are not properly validated. Because JWT… | ||
| CVE-2025-9485 | Cri | 0.57 | 9.8 | 0.01 | Oct 4, 2025 | The OAuth Single Sign On – SSO (OAuth Client) plugin for WordPress is vulnerable to Improper Verification of Cryptographic Signature in versions up to, and including, 6.26.12. This is due to the plugin performing unsafe JWT token processing without verification or validation… | ||
| CVE-2025-30064 | — | Hig | 0.57 | — | 0.00 | Aug 27, 2025 | An insufficiently secured internal function allows session generation for arbitrary users. The decodeParam function checks the JWT but does not verify which signing algorithm was used. As a result, an attacker can use the "ex:action" parameter in the VerifyUserByThrustedService… | |
| CVE-2025-40758 | Hig | 0.57 | 8.7 | 0.00 | Aug 14, 2025 | A vulnerability has been identified in Mendix SAML (Mendix 10.12 compatible) (All versions < V4.0.3), Mendix SAML (Mendix 10.21 compatible) (All versions < V4.1.2), Mendix SAML (Mendix 9.24 compatible) (All versions < V3.6.21). Affected versions of the module insufficiently… | ||
| CVE-2025-2233 | Hig | 0.57 | 8.8 | 0.01 | Mar 11, 2025 | Samsung SmartThings Improper Verification of Cryptographic Signature Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Samsung SmartThings. Authentication is not required to exploit… | ||
| CVE-2025-23369 | Hig | 0.57 | 8.8 | 0.02 | Jan 21, 2025 | An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed signature spoofing for unauthorized internal users. Instances not utilizing SAML single sign-on or where the attacker is not already an existing user were… | ||
| CVE-2024-22461 | Hig | 0.57 | 8.8 | 0.01 | Dec 13, 2024 | Dell RecoverPoint for Virtual Machines 6.0.x contains an OS Command injection vulnerability. A low privileged remote attacker could potentially exploit this vulnerability by running any command as root, leading to gaining of root-level access and compromise of complete system. |
- risk 0.58cvss 10.0epss 0.00
A SAML library not dependent on any frameworks that runs in Node. In version 5.0.1, Node-SAML loads the assertion from the (unsigned) original response document. This is different than the parts that are verified when checking signature. This allows an attacker to modify…
- risk 0.58cvss 9.8epss 0.20
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. An authentication bypass vulnerability was found in ruby-saml prior to versions 1.12.4 and 1.18.0 due to a parser differential. ReXML and Nokogiri parse XML differently; the parsers can…
- risk 0.58cvss 10.0epss 0.00
`jupyterhub-ltiauthenticator` is a JupyterHub authenticator for learning tools interoperability (LTI). LTI13Authenticator that was introduced in `jupyterhub-ltiauthenticator` 1.3.0 wasn't validating JWT signatures. This is believed to allow the LTI13Authenticator to authorize a…
- risk 0.58cvss 10.0epss 0.01
xml-crypto is an xml digital signature and encryption library for Node.js. In affected versions the default configuration does not check authorization of the signer, it only checks the validity of the signature per section 3.2.2 of the w3 xmldsig-core-20080610 spec. As such,…
- risk 0.57cvss 9.8epss 0.00
Net::SAML2 versions before 0.86 for Perl allow authentication bypass because _verify_encrypted_assertion accepts an EncryptedAssertion whose decrypted content carries no signature. _verify_encrypted_assertion decrypts the EncryptedAssertion and returns it as verified when it…
- risk 0.57cvss 8.8epss 0.00
The Web-based Management allows a remote low privileged Engineer user to install additional APPs on the device downloaded from the PLCnext Store without implementing any data verification mechanism, leading to the capability for an Engineer user to reach arbitrary code execution…
- risk 0.57cvss 9.8epss 0.00
Missing JWT signature verification in AWS Ops Wheel allows unauthenticated attackers to forge JWT tokens and gain unintended administrative access to the application, including the ability to read, modify, and delete all application data across tenants and manage Cognito user…
- risk 0.57cvss 9.8epss 0.00
Convoy is a KVM server management panel for hosting businesses. From version 3.9.0-beta to before version 4.5.1, the JWTService::decode() method did not verify the cryptographic signature of JWT tokens. While the method configured a symmetric HMAC-SHA256 signer via lcobucci/jwt,…
- risk 0.57cvss 9.8epss 0.00
OpenOlat is an open source web-based e-learning platform for teaching, learning, assessment and communication. From version 10.5.4 to before version 20.2.5, OpenOLAT's OpenID Connect implicit flow implementation does not verify JWT signatures. The JSONWebToken.parse() method…
- risk 0.57cvss 8.8epss 0.00
Philips Hue Bridge hk_hap Ed25519 Signature Verification Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Philips Hue Bridge. Authentication is not required to exploit this…
- risk 0.57cvss 9.8epss 0.00
Authlib is a Python library which builds OAuth and OpenID Connect servers. From version 1.6.5 to before version 1.6.7, previous tests involving passing a malicious JWT containing alg: none and an empty signature was passing the signature verification step without any changes to…
- risk 0.57cvss 8.8epss 0.00
authentik is an open-source identity provider. Prior to 2025.8.6, 2025.10.4, and 2025.12.4, when using a SAML Source that has the option Verify Assertion Signature under Verification Certificate enabled and not Verify Response Signature, or does not have the Encryption…
- risk 0.57cvss 8.8epss 0.00
SAP NetWeaver Application Server ABAP and ABAP Platform allows an authenticated attacker with normal privileges to obtain a valid signed message and send modified signed XML documents to the verifier. This may result in acceptance of tampered identity information, unauthorized…
- risk 0.57cvss 9.8epss 0.00
Fleet is open source device management software. In versions prior to 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3, a vulnerability in Fleet's Windows MDM enrollment flow could allow an attacker to submit forged authentication tokens that are not properly validated. Because JWT…
- risk 0.57cvss 9.8epss 0.01
The OAuth Single Sign On – SSO (OAuth Client) plugin for WordPress is vulnerable to Improper Verification of Cryptographic Signature in versions up to, and including, 6.26.12. This is due to the plugin performing unsafe JWT token processing without verification or validation…
- risk 0.57cvss —epss 0.00
An insufficiently secured internal function allows session generation for arbitrary users. The decodeParam function checks the JWT but does not verify which signing algorithm was used. As a result, an attacker can use the "ex:action" parameter in the VerifyUserByThrustedService…
- risk 0.57cvss 8.7epss 0.00
A vulnerability has been identified in Mendix SAML (Mendix 10.12 compatible) (All versions < V4.0.3), Mendix SAML (Mendix 10.21 compatible) (All versions < V4.1.2), Mendix SAML (Mendix 9.24 compatible) (All versions < V3.6.21). Affected versions of the module insufficiently…
- risk 0.57cvss 8.8epss 0.01
Samsung SmartThings Improper Verification of Cryptographic Signature Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Samsung SmartThings. Authentication is not required to exploit…
- risk 0.57cvss 8.8epss 0.02
An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed signature spoofing for unauthorized internal users. Instances not utilizing SAML single sign-on or where the attacker is not already an existing user were…
- risk 0.57cvss 8.8epss 0.01
Dell RecoverPoint for Virtual Machines 6.0.x contains an OS Command injection vulnerability. A low privileged remote attacker could potentially exploit this vulnerability by running any command as root, leading to gaining of root-level access and compromise of complete system.