CVE-2026-32600

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 v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/simplesamlphp/xml-security/commit/cad6d57cf0a5a0b7e0cc4e4a5b18752e56eb1520	Patch
https://github.com/simplesamlphp/xml-security/commit/fdc12449e959c610943f9fd428e95e3832d74c25	Patch
https://github.com/simplesamlphp/xml-security/security/advisories/GHSA-r353-4845-pr5p	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:simplesamlphp:xml-security::::::::
	cpe:2.3:a:simplesamlphp:xml-security::::::::

History

No history.

Information

Published : 2026-03-16 14:19

Updated : 2026-03-17 19:25

NVD link : CVE-2026-32600

Mitre link : CVE-2026-32600

CVE.ORG link : CVE-2026-32600

JSON object : View

Products Affected

simplesamlphp

xml-security

CWE

CWE-354

Improper Validation of Integrity Check Value

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