SB20260424111 - Improper validation of integrity check value in XMLSecLibs

Description

This security bulletin contains information about 1 vulnerability.

1) Improper validation of integrity check value (CVE-ID: CVE-2026-32313)

CWE-ID: CWE-354 - Improper Validation of Integrity Check Value

CVSSv4: 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/E:U/U:Amber

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.

Remediation

Install update from vendor's website.

References

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