🛡️ CVE-2025-54419 — passport-saml

🔴 CVSS 10.0 — Critical ✅ No Known Exploit CWE-287 NVD
10.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Node-SAML SAML Signature Verification Vulnerability

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity high, availability none.

Weakness class

CVE-2025-54419 is classified as CWE-287: Improper Authentication. The identity of the caller is not established correctly, so an attacker can act as another user.

Affected software

CVE-2025-54419 is recorded against 4 packages.

  • @node-saml/node-saml
  • @node-saml/passport-saml
  • passport-saml
  • unknown

Timeline and source

Published on 28 July 2025 and last revised on 8 August 2025. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)
github.com (Web)

Details

Severity CRITICAL
CVSS Score 10.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CWE CWE-287
Public Exploit ✅ No
Source NVD
Published 2025-07-28
Updated 2026-08-12
Modified 2025-08-08
Fix URL N/A

Affected Packages

Software From version Fixed in
@node-saml/node-saml — —
@node-saml/passport-saml — —
passport-saml — —
unknown — —

Similar Threats

Exploit Protection

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CVE-2025-54419 carries CVSS 10.0 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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