CVE-2025-54419CRITICAL 10.0EPSS p26.2%
CVE-2025-54419CVE-2025-54419
Description
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.
Scoring
| CVSS 3.1 | 10.0 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N |
| EPSS | 0.34% probability of exploitation · percentile 26.2% · 2026-06-18T12:00:27Z |
| Published | 2025-07-28 |
| Last modified | 2026-04-15 |
Underlying weaknesses· 2
References
2
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Improper Authenticationcwe-287 | 0% | live |
| Weakness | Improper Verification of Cryptographic Signaturecwe-347 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.