{"id":"CVE-2026-116585","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-116585","generatedAt":"2026-10-28T10:37:31.945Z","title":"Insufficient validation allows the empty buffer to be indexed, causing a panic and denial of service.","description":"Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web Encryption (JWE), JSON Web Signature (JWS), and JSON Web Token (JWT) standards. Prior to 4.1.5, decrypting untrusted JWE ciphertext with A128CBC-HS256, A192CBC-HS384, or A256CBC-HS512 can pass an empty ciphertext buffer to CBC-HMAC unpadding. Insufficient validation allows the empty buffer to be indexed, causing a panic and denial of service. Applications that decrypt attacker-controlled ciphertext with one of these content-encryption algorithms are affected. This issue is fixed in version 4.1.5.","published":"2026-10-26T22:16:55.000Z","lastModified":"2026-10-27T15:08:51.000Z","status":"Awaiting Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":6.9,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-129"],"affected":[],"epss":{"score":0.00264,"percentile":0.18236,"date":"2026-10-27","history":[{"date":"2026-10-27","score":0.00264,"percentile":0.18236}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-26T22:16:55.000Z","detail":{"score":"6.9","severity":"MEDIUM","publishedAt":"2026-10-26T22:16:54.910Z"},"summary":"New CVE, medium severity (CVSS 6.9)."}],"references":[{"url":"https://github.com/go-jose/go-jose/commit/35883f7999e87cbd1b1f4cda07fdad8cd71c3dd6","source":"security-advisories@github.com"},{"url":"https://github.com/go-jose/go-jose/commit/74114c2fa22669a2b2a296746eaa82e15566fd54","source":"security-advisories@github.com"},{"url":"https://github.com/go-jose/go-jose/pull/292","source":"security-advisories@github.com"},{"url":"https://github.com/go-jose/go-jose/releases/tag/v4.1.5","source":"security-advisories@github.com"},{"url":"https://github.com/go-jose/go-jose/security/advisories/GHSA-4w3g-jfj2-cw2q","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-116585","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."}