CVE-2025-29774

CRITICAL

NPM Xml-crypto < 6.0.1 - Signature Verification Bypass

Title source: rule

Description

xml-crypto is an XML digital signature and encryption library for Node.js. An attacker may be able to exploit a vulnerability in versions prior to 6.0.1, 3.2.1, and 2.1.6 to bypass authentication or authorization mechanisms in systems that rely on xml-crypto for verifying signed XML documents. The vulnerability allows an attacker to modify a valid signed XML message in a way that still passes signature verification checks. For example, it could be used to alter critical identity or access control attributes, enabling an attacker with a valid account to escalate privileges or impersonate another user. Users of versions 6.0.0 and prior should upgrade to version 6.0.1 to receive a fix. Those who are still using v2.x or v3.x should upgrade to patched versions 2.1.6 or 3.2.1, respectively.

Exploits (3)

nomisec WRITEUP 4 stars
by demining · poc
https://github.com/demining/Digital-Signature-Forgery-Attack
nomisec WRITEUP 1 stars
by demining · poc
https://github.com/demining/Phantom-Signature-Attack
nomisec SUSPICIOUS
by Mrrishuyt · poc
https://github.com/Mrrishuyt/mrrishuyt.github.io

Scores

CVSS v4 9.3
EPSS 0.0047
EPSS Percentile 64.7%
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Details

CWE
CWE-347
Status published
Products (4)
node-saml/xml-crypto < 2.1.6
node-saml/xml-crypto >= 3.0.0, < 3.2.1
node-saml/xml-crypto >= 4.0.0, < 6.0.1
npm/xml-crypto 4.0.0 - 6.0.1npm
Published Mar 14, 2025
Tracked Since Feb 18, 2026