{"id":"CVE-2026-32313","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-32313","generatedAt":"2026-10-28T05:01:29.345Z","title":"An attacker can use this to brute-force an authentication tag, recover the GHASH key, and decrypt the encrypted nodes.","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.","published":"2026-03-16T14:19:34.000Z","lastModified":"2026-06-17T10:35:33.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N"},"cwe":["CWE-354"],"affected":["xmlseclibs project/xmlseclibs"],"epss":{"score":0.00158,"percentile":0.04926,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/robrichards/xmlseclibs/commit/03062be78178cbb5e8f605cd255dc32a14981f92","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/robrichards/xmlseclibs/releases/tag/3.1.5","tags":["Product"],"source":"security-advisories@github.com"},{"url":"https://github.com/robrichards/xmlseclibs/security/advisories/GHSA-4v26-v6cg-g6f9","tags":["Exploit","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-32313","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}