High severity8.2NVD Advisory· Published Mar 16, 2026· Updated Jun 17, 2026
CVE-2026-32600
CVE-2026-32600
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
simplesamlphp/xml-securityPackagist | >= 2.0.0, < 2.3.1 | 2.3.1 |
simplesamlphp/xml-securityPackagist | < 1.13.9 | 1.13.9 |
Affected products
3cpe:2.3:a:simplesamlphp:xml-security:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:simplesamlphp:xml-security:*:*:*:*:*:*:*:*range: <1.13.9
- (no CPE)range: >= 2.0.0, < 2.3.1
Patches
Vulnerability mechanics
References
5- github.com/simplesamlphp/xml-security/commit/cad6d57cf0a5a0b7e0cc4e4a5b18752e56eb1520nvdPatchWEB
- github.com/simplesamlphp/xml-security/commit/fdc12449e959c610943f9fd428e95e3832d74c25nvdPatchWEB
- github.com/simplesamlphp/xml-security/security/advisories/GHSA-r353-4845-pr5pnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-r353-4845-pr5pghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-32600ghsaADVISORY
News mentions
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