Improper validation of integrity check value in XMLSecLibs - CVE-2026-32313
Published: April 24, 2026
Vulnerability identifier: #VU127523
CSH Severity: High
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-32313
CWE-ID: CWE-354
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information and modify encrypted data.
The vulnerability exists due to improper validation of integrity check values in AES-GCM decryption of encrypted XML nodes when processing encrypted XML content. A remote attacker can supply a specially crafted encrypted node with a truncated authentication tag to disclose sensitive information and modify encrypted data.
The issue affects XML nodes encrypted with aes-128-gcm, aes-192-gcm, or aes-256-gcm.
Affected software
XMLSecLibs
How to mitigate CVE-2026-32313
Install security update from vendor's website.
XMLSecLibs - update to 3.1.5