High severity8.2NVD Advisory· Published Mar 16, 2026· Updated Jun 17, 2026
CVE-2026-32313
CVE-2026-32313
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
robrichards/xmlseclibsPackagist | < 3.1.5 | 3.1.5 |
Affected products
6- osv-coords4 versionspkg:apk/chainguard/zabbix-web-nginx-pgsql-6.0pkg:apk/chainguard/zabbix-web-nginx-pgsql-fips-6.0pkg:apk/chainguard/zabbix-web-nginx-pgsql-fips-7.4pkg:composer/robrichards/xmlseclibs
< 6.0.45-r2+ 3 more
- (no CPE)range: < 6.0.45-r2
- (no CPE)range: < 6.0.45-r2
- (no CPE)range: < 7.4.8-r0
- (no CPE)range: < 3.1.5
- Range: < 3.1.5
Patches
Vulnerability mechanics
References
5- github.com/robrichards/xmlseclibs/commit/03062be78178cbb5e8f605cd255dc32a14981f92nvdPatchWEB
- github.com/robrichards/xmlseclibs/security/advisories/GHSA-4v26-v6cg-g6f9nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-4v26-v6cg-g6f9ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-32313ghsaADVISORY
- github.com/robrichards/xmlseclibs/releases/tag/3.1.5nvdProductWEB
News mentions
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