{"id":"CVE-2018-6347","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-6347","generatedAt":"2026-10-28T20:11:30.839Z","title":"An issue in the Proxygen handling of HTTP2 parsing of headers/trailers can lead to a denial-of-service attack.","description":"An issue in the Proxygen handling of HTTP2 parsing of headers/trailers can lead to a denial-of-service attack. This affects Proxygen prior to v2018.12.31.00.","published":"2018-12-31T22:29:01.000Z","lastModified":"2026-06-17T02:01:43.000Z","status":"Modified","sourceIdentifier":"cve-assign@fb.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-400","CWE-20"],"affected":["proxygen project/proxygen"],"epss":{"score":0.0137,"percentile":0.71774,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/facebook/proxygen/commit/223e0aa6bc7590e86af1e917185a2e0efe160711","tags":["Patch","Third Party Advisory"],"source":"cve-assign@fb.com"},{"url":"https://github.com/facebook/proxygen/commit/223e0aa6bc7590e86af1e917185a2e0efe160711","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-6347","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}