{"id":"EUVD-2026-18509","revision":null,"records":[{"revision":"7d8b02e3aa8b471f84fadadf48ee272c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-34752","aliases":[],"title":"Haraka affected by DoS via `__proto__` email header","description":"Haraka is a Node.js mail server. Prior to version 3.1.4, sending an email with __proto__: as a header name crashes the Haraka worker process. 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In cluster mode, the master restarts the worker, but all sessions are lost.","state":0,"publishedAt":"2026-04-01T22:56:09+00:00","modifiedAt":"2026-04-06T17:56:38.130744+00:00","affected":[{"ecosystem":"npm","name":"Haraka","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"3.1.4"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/haraka/Haraka/security/advisories/GHSA-xph3-r2jf-4vp3","https://nvd.nist.gov/vuln/detail/CVE-2026-34752","https://github.com/haraka/Haraka","https://github.com/haraka/Haraka/releases/tag/v3.1.4"],"sourceUrl":"https://github.com/advisories/GHSA-xph3-r2jf-4vp3","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-xph3-r2jf-4vp3","identifiers":["GHSA-xph3-r2jf-4vp3","CVE-2026-34752"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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