{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-34752","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-03-30T19:17:10.225Z","datePublished":"2026-04-02T18:42:38.367Z","dateUpdated":"2026-04-03T15:47:34.494Z"},"containers":{"cna":{"title":"Haraka affected by DoS via `__proto__` email header","problemTypes":[{"descriptions":[{"cweId":"CWE-248","lang":"en","description":"CWE-248: Uncaught Exception","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"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","version":"4.0"}}],"references":[{"name":"https://github.com/haraka/Haraka/security/advisories/GHSA-xph3-r2jf-4vp3","tags":["x_refsource_CONFIRM"],"url":"https://github.com/haraka/Haraka/security/advisories/GHSA-xph3-r2jf-4vp3"},{"name":"https://github.com/haraka/Haraka/releases/tag/v3.1.4","tags":["x_refsource_MISC"],"url":"https://github.com/haraka/Haraka/releases/tag/v3.1.4"}],"affected":[{"vendor":"haraka","product":"Haraka","versions":[{"version":"< 3.1.4","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-04-02T18:42:38.367Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-xph3-r2jf-4vp3","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-03T15:47:22.511467Z","id":"CVE-2026-34752","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-03T15:47:34.494Z"}}]}}