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 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-2025-29775

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-2025-29775
https://github.com/node-saml/xml-crypto/security/advisories/GHSA-x3m8-899r-f7c3
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