{"id":"CVE-2026-33467","aliases":["GHSA-r727-5pf6-47r2","GO-2026-5611"],"url":"https://o3.security/vulnerability/CVE-2026-33467","summary":"Improper Verification of Cryptographic Signature in Elastic Package Registry Leading to Package Integrity Bypass","details":"Improper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed.","published":"2026-04-28T21:15:24.551Z","modified":"2026-08-12T03:51:11.192654842Z","cvss":{"score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":{"score":0.00124,"percentile":0.02498,"asOf":"2026-08-13"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/elastic/package-registry","fixedVersion":"1.38.0"}],"fix":null,"references":[{"type":"WEB","url":"https://discuss.elastic.co/t/elastic-package-registry-1-38-0-security-update-esa-2026-27/386081"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33467.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33467"},{"type":"PACKAGE","url":"https://github.com/elastic/package-registry"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:11.192654842Z"}}