CVE-2025-54419
criticalpriority · track · 0EPSS 0.004 · 30 %ileDEEUUSEPSS · scored 2026-10-27
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 authentication details within a valid SAML assertion. For example, in one attack it is possible to remove any character from the SAML assertion username. To conduct the attack an attacker would need a validly signed document from the identity provider (IdP). This is fixed in version 5.1.0.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (6)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2025-2664HCL BigFix: Schwachstelle ermöglicht Manipulation von DatenDeutsch2025-11-23csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in HCL BigFix ausnutzen, um Daten zu manipulieren.
- GHSA-4mxg-3p6v-xgq3Node-SAML SAML Signature Verification Vulnerability2025-07-28ghsa · osvUS
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 authentication details within a valid SAML assertion. For example, in one attack it is possible to remove any character from the SAML assertion username. To conduct the attack an attacker would need a validly signed document from the identity provider (IdP). In fixing this we made sure to process the SAML assertions from only verified/authenticated contents. This will prevent future variants from coming up. Note: this is distinct from the previous xml-crypto CVEs.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (11)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2025-54419cnnvd
- https://github.com/node-saml/node-saml/commit/31ead9411ebc3e2385086fa9149b6c17732bca10cnnvd
- https://github.com/node-saml/node-saml/releasesPatchcnnvd
- https://github.com/node-saml/node-saml/releases/tag/v5.1.0cnnvd
- https://github.com/node-saml/node-saml/security/advisories/GHSA-4mxg-3p6v-xgq3cnnvd
- https://github.com/node-saml/node-saml/commit/31ead9411ebc3e2385086fa9149b6c17732bca10enisa_euvd
- https://github.com/node-saml/node-saml/releases/tag/v5.1.0enisa_euvd
- https://github.com/node-saml/node-saml/security/advisories/GHSA-4mxg-3p6v-xgq3enisa_euvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan