{"id":"EM-20261110-V57W","url":"https://cyber.eventmonitor.net/incident/EM-20261110-V57W/rack-vulnerability-cve-2026-125110/","type":"cve","title":"Rack Vulnerability (CVE-2026-125110)","subtitle":"CVE-2026-125110","subject":"CVE-2026-125110","status":"Developing","severity":"medium","affected":[],"headline":null,"born":"2026-11-10T18:50:07.000Z","firstSignal":"2026-11-09T22:00:40.000Z","lastSignal":"2026-11-10T18:50:07.000Z","updated":"2026-11-11T00:41:04.905Z","revision":1,"life":[{"status":"Born","at":"2026-11-10T18:50:07.000Z","why":"second independent source: C26 GitHub Advisory Database"},{"status":"Developing","at":"2026-11-10T18:50:07.000Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-09T22:00:40.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-10T18:50:07.000Z","what":"Born: second source, C26 GitHub Advisory Database. Page EM-20261110-V57W created."}],"stages":[{"name":"Disclosed","at":"2026-11-09T22:18:42.287Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-09T22:18:42.287Z","detail":"CVSS 5.3 · EPSS 0.3%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-09T22:00:40.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-09T22:00:40.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":2,"title":"Red Hat: CVE-2026-125110 (moderate)","text":"rack: rack: Security header bypass via unnormalized dot segments in request paths","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-125110.json"},{"at":"2026-11-10T18:50:07.000Z","source":"C26","sourceName":"GitHub Advisory Database","role":"Database","severity":2,"title":"GHSA-wvg4-6p58-3gh3 / CVE-2026-125110: Rack: Rack::Static header_rules bypass via dot-segment normalization mismatch","text":"rubygems:rack, rubygems:rack, rubygems:rack","url":"https://github.com/advisories/GHSA-wvg4-6p58-3gh3"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-09T22:18:42.287","score":5.3,"severity":"MEDIUM","desc":"Rack is a modular Ruby web server interface. Prior to 2.2.25, 3.1.23, and 3.2.8, Rack::Static serves a path after Utils.clean_path_info normalization but evaluates header_rules against a path that is only URL-decoded. An unauthenticated attacker can request a known file through raw or…","product":"","seen":1794273221013},"kev":null,"epss":{"epss":0.00251,"pct":0.16557,"at":1794338539165},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}