{"schemaVersion":3,"id":"USN-8624-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"ruby-sinatra vulnerability\n\nIt was discovered that Sinatra did not properly handle header parsing,\ncausing ETag generation to hang when given specific input. A remote\nattacker could possibly use this issue to cause a denial of service.","dates":{"published":"2026-07-29T19:09:19.000Z","modified":"2026-07-31T02:00:30.205Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"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":"ruby-sinatra","name":"ruby-sinatra","label":"ruby-sinatra","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/ruby-sinatra","purlType":"deb","versions":[{"text":"< 1.4.7-3ubuntu0.1~esm3","noFixRecorded":false,"fixedIn":null},{"text":"< 1.4.8-1ubuntu0.1~esm3","noFixRecorded":false,"fixedIn":null},{"text":"< 2.0.8.1-1ubuntu0.1~esm3","noFixRecorded":false,"fixedIn":null},{"text":"< 2.0.8.1-2+deb11u1ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.4.7-3ubuntu0.1~esm3 | < 1.4.8-1ubuntu0.1~esm3 | < 2.0.8.1-1ubuntu0.1~esm3 | < 2.0.8.1-2+deb11u1ubuntu0.1~esm1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8624-1","label":"ubuntu.com/security/notices/USN-8624-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-61921","label":"ubuntu.com/security/CVE-2025-61921","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CVE-2025-61921"]},"timeline":[{"kind":"published","date":"2026-07-29T19:09:19.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-31T02:00:30.205Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T07:14:09.932Z","stale":false,"partial":false}}