{"id":"CVE-2026-34752","summary":"Haraka affected by DoS via `__proto__` email header","details":"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.","aliases":["GHSA-xph3-r2jf-4vp3"],"modified":"2026-08-12T03:51:47.878515852Z","published":"2026-04-02T18:42:38.367Z","database_specific":{"cwe_ids":["CWE-248"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34752.json","cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/haraka/Haraka/releases/tag/v3.1.4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34752.json"},{"type":"ADVISORY","url":"https://github.com/haraka/Haraka/security/advisories/GHSA-xph3-r2jf-4vp3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34752"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/haraka/haraka","events":[{"introduced":"0"},{"fixed":"a9c0fd522caa27f0ec704da29ab328b41f4dac0f"}],"database_specific":{"cpe":"cpe:2.3:a:haraka_project:haraka:*:*:*:*:*:node.js:*:*","extracted_events":[{"introduced":"0"},{"fixed":"3.1.4"}],"source":["AFFECTED_FIELD","CPE_RANGE","REFERENCES"]}}],"versions":["v3.1.3","v3.1.2","v3.1.1","v3.1.0","v3.0.5","3.0.4","v3.0.3","v3.0.2","v3.0.1","3.0.0","2.8.28","2.8.27","2.8.26","2.8.25","2.8.24","2.8.22","release-2.8.21","2.8.20","v2.8.19","2.8.18","2.8.17","2.8.16","2.8.15","v2.8.14","2.8.13","2.8.12","2.8.11","2.8.10","v2.8.9","v2.8.8","v2.8.7","v2.8.6","v2.8.5","v2.8.4","v2.8.0","v2.7.3","v2.7.2","v2.7.1","v2.7.0","v2.6.1","v2.6.0","v2.5.0","v2.4.0","v2.3.1","v2.3.0","v2.2.6","v2.2.5","v2.2.0","v2.1.6","v2.1.3","v2.1.1","v2.1.0","v2.0.5","v2.0.4","v2.0.3","v2.0.0","v1.4.0","v1.3.3","v1.3.2","v1.3.1","v1.2.0","v0.6.0","v0.5.11","v0.5.10","v0.5.7","v0.5.6","v0.5.5","v0.5.3","v0.5.2","v0.5","v0.4","v0.3","v0.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34752.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}