{"schemaVersion":3,"id":"UBUNTU-CVE-2022-31394","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Hyperium Hyper before 0.14.19 does not allow for customization of the max_header_list_size method in the H2 third-party software, allowing attackers to perform HTTP2 attacks.","dates":{"published":"2023-02-21T14:15:00.000Z","modified":"2026-02-04T03:04:36.104Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":true,"selection":"version-preference"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","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","exploitability":10,"impact":6,"computed":true}]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"rust-hyper","name":"rust-hyper","label":"rust-hyper","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/rust-hyper","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/CVE-2022-31394","label":"ubuntu.com/security/CVE-2022-31394","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://github.com/hyperium/hyper/issues/2826","label":"github.com/hyperium/hyper/issues/2826","hostname":"github.com","tags":["REPORT"]},{"url":"https://github.com/hyperium/hyper/compare/v0.14.18...v0.14.19","label":"github.com/hyperium/hyper/compare/v0.14.18...v0.14.19","hostname":"github.com","tags":["REPORT"]},{"url":"https://github.com/hyperium/hyper/pull/2828","label":"github.com/hyperium/hyper/pull/2828","hostname":"github.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-31394","label":"www.cve.org/CVERecord?id=CVE-2022-31394","hostname":"www.cve.org","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CVE-2022-31394"]},"timeline":[{"kind":"published","date":"2023-02-21T14:15:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-02-04T03:04:36.104Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T12:10:15.819Z","stale":false,"partial":false}}