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.

Classification

CVE ID: CVE-2025-29774

CVSS Base Severity: CRITICAL

CVSS Base Score: 9.3

CVSS Vector: 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

Affected Products

Vendor: node-saml

Product: xml-crypto

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.12% (probability of being exploited)

EPSS Percentile: 27.41% (scored less or equal to compared to others)

EPSS Date: 2025-04-12 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-29774
https://github.com/node-saml/xml-crypto/security/advisories/GHSA-9p8x-f768-wp2g
https://github.com/node-saml/xml-crypto/commit/28f92218ecbb8dcbd238afa4efbbd50302aa9aed
https://github.com/node-saml/xml-crypto/commit/886dc63a8b4bb5ae1db9f41c7854b171eb83aa98
https://github.com/node-saml/xml-crypto/commit/8ac6118ee7978b46aa56b82cbcaa5fca58c93a07
https://github.com/node-saml/xml-crypto/releases/tag/v2.1.6
https://github.com/node-saml/xml-crypto/releases/tag/v3.2.1
https://github.com/node-saml/xml-crypto/releases/tag/v6.0.1

Timeline