What is CVE-2026-32313?

CVE-2026-32313 is a high-severity vulnerability in Robrichards Xmlseclibs, classified under Improper Validation of Integrity Check Value. CVSS score: 8.2/10. Published 2026-03-13.

How severe is CVE-2026-32313?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in Robrichards Xmlseclibs

CVE-2026-32313

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 c…

EPSS: 0.001 (16.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.

Affected products

Robrichards Xmlseclibs — versions < 3.1.5

Weakness classification (CWE)

CWE-354 — Improper Validation of Integrity Check Value

References

https://github.com/robrichards/xmlseclibs/security/advisories/GHSA-4v26-v6cg-g6f9 (x_refsource_CONFIRM)
https://github.com/robrichards/xmlseclibs/commit/03062be78178cbb5e8f605cd255dc32a14981f92 (x_refsource_MISC)
https://github.com/robrichards/xmlseclibs/releases/tag/3.1.5 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-32313?: CVE-2026-32313 is a high-severity vulnerability in Robrichards Xmlseclibs, classified under Improper Validation of Integrity Check Value. CVSS score: 8.2/10. Published 2026-03-13.
How severe is CVE-2026-32313?: High severity. CVSS v3 base score is 8.2 out of 10.