CVE-2026-32313

Published: Mar 16, 2026Modified: Jun 17, 2026

8.2

Vector

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

Exploitability: 3.9 / Impact: 4.2

Source: security-advisories@github.com (Secondary)

Description

xmlseclibs is a library written in PHP for working with XML Encryption and Signatures. Prior to 3.1.5, 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 3.1.5.

Affected (1)

Products: Xmlseclibs Project: Xmlseclibs

Xmlseclibs Project

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Xmlseclibs Project Xmlseclibs	Before 3.1.5

Related CWEs

Improper Validation of Integrity Check Value

The product does not validate or incorrectly validates the integrity check values or "checksums" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.

References (3)

https://github.com/robrichards/xmlseclibs/commit/03062be78178cbb5e8f605cd255dc32a14981f92

Source: security-advisories@github.com

Patch

https://github.com/robrichards/xmlseclibs/releases/tag/3.1.5

Source: security-advisories@github.com

Product

https://github.com/robrichards/xmlseclibs/security/advisories/GHSA-4v26-v6cg-g6f9

Source: security-advisories@github.com

ExploitVendor Advisory

Timeline

No history available yet.