by Kastro
Paper/Archive/CVE-2025-54419

CVE-2025-54419

node-saml node-saml — Node-SAML Contains SAML Signature Verification Vulnerability

EPSS 0.4%CVSS 10.0
critical.is priorityof 100
36
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 32.0.320 × 206.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
node-saml= 5.0.1–CNA

Scores by source

GitHub_M (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgithub.com/node-saml/node-saml/security/advisories/GHSA-4mxg-3p6v-xgq3refgithub.com/node-saml/node-saml/commit/31ead9411ebc3e2385086fa9149b6c17732bca10refgithub.com/node-saml/node-saml/releases/tag/v5.1.0