{"id":"CVE-2026-34752","title":"Haraka is a Node.js mail server","summary":"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. This issue has been patched in version 3.1.4.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-248"],"vendor":"haraka_project","product":"haraka","affected":["haraka < 3.1.4"],"patched":["haraka 3.1.4"],"published":"2026-04-02","updated":"2026-10-06","sourceUpdated":"2026-10-06T22:10:00.247","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-34752","references":[{"url":"https://github.com/haraka/Haraka/releases/tag/v3.1.4","label":"security-advisories@github.com"},{"url":"https://github.com/haraka/Haraka/security/advisories/GHSA-xph3-r2jf-4vp3","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00515,"epssPercentile":0.41923,"ingestedAt":"2026-10-06T22:23:15.912Z","slug":"CVE-2026-34752","body":"## Overview\n\nHaraka 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. This issue has been patched in version 3.1.4.\n\n## Affected\n\n- `haraka < 3.1.4`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `haraka 3.1.4`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}