CVE-2026-32600

CVE-2026-32600 · xml-security is Missing AES-GCM Authentication Tag Validation on Encrypted Nodes Allows for Unauthorized Decryption

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 8.2 · High · EPSS 0.2% · Fix available

Published

2026-03-13T19:58:41.692Z

Updated

2026-03-16T14:03:17.811Z

Stack: php

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