CVE-2026-32600

HIGH

8.2

Description

xml-security is a library that implements XML signatures and encryption. Prior to versions 2.3.1 and 1.13.9, XML nodes encrypted with either aes-128-gcm, aes-192-gcm, or aes-256-gcm lack validation of the authentication tag length. An attacker can use this to brute-force an authentication tag, recover the GHASH key, and decrypt the encrypted nodes. It also allows to forge arbitrary ciphertexts without knowing the encryption key. This vulnerability is fixed in 2.3.1 and 1.13.9.

CVE Details

CVSS v3.1 Score8.2

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/16/2026

Last Modified3/17/2026

Sourcenvd

Honeypot Sightings0

Affected Products

simplesamlphp:xml-security

Weaknesses (CWE)

CWE-354

References

https://github.com/simplesamlphp/xml-security/commit/cad6d57cf0a5a0b7e0cc4e4a5b18752e56eb1520(security-advisories@github.com)

https://github.com/simplesamlphp/xml-security/commit/fdc12449e959c610943f9fd428e95e3832d74c25(security-advisories@github.com)

https://github.com/simplesamlphp/xml-security/security/advisories/GHSA-r353-4845-pr5p(security-advisories@github.com)

IOC Correlations

No correlations recorded

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