Improper Verification of Cryptographic Signature Affecting @node-saml/node-saml package, versions <5.0.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published29 Jul 2025
- disclosed28 Jul 2025
- creditahacker1-securesaml
Introduced: 28 Jul 2025
CVE-2025-54419 (opens in a new tab)How to fix?
Upgrade @node-saml/node-saml to version 5.0.1 or higher.
Overview
@node-saml/node-saml is a SAML 2.0 implementation for Node.js
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via validatePostResponseAsync due to loading of the assertion from the unsigned original response document. An attacker can alter authentication details, such as modifying the username in a valid SAML assertion.
Notes:
This is only exploitable if the attacker possesses a validly signed SAML response from the IdP.
This differs from the
xml-crypto-related CVE-2025-54369