{"id":"EM-20261110-8SED","url":"https://cyber.eventmonitor.net/incident/EM-20261110-8SED/rack-vulnerability-cve-2026-125108/","type":"cve","title":"Rack Vulnerability (CVE-2026-125108)","subtitle":"CVE-2026-125108","subject":"CVE-2026-125108","status":"Developing","severity":"info","affected":[],"headline":null,"born":"2026-11-10T19:26:28.000Z","firstSignal":"2026-11-09T21:55:20.000Z","lastSignal":"2026-11-10T19:26:28.000Z","updated":"2026-11-11T00:41:04.905Z","revision":1,"life":[{"status":"Born","at":"2026-11-10T19:26:28.000Z","why":"second independent source: C26 GitHub Advisory Database"},{"status":"Developing","at":"2026-11-10T19:26:28.000Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-09T21:55:20.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-10T19:26:28.000Z","what":"Born: second source, C26 GitHub Advisory Database. Page EM-20261110-8SED created."}],"stages":[{"name":"Disclosed","at":"2026-11-09T22:18:41.963Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-09T22:18:41.963Z","detail":"CVSS 3.7 · EPSS 0.2%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-09T21:55:20.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-09T21:55:20.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":1,"title":"Red Hat: CVE-2026-125108 (low)","text":"rack: rack: Security inspection bypass via multipart boundary parsing differential","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-125108.json"},{"at":"2026-11-10T19:26:28.000Z","source":"C26","sourceName":"GitHub Advisory Database","role":"Database","severity":1,"title":"GHSA-p8x9-v4hv-2w4g / CVE-2026-125108: Rack: Multipart boundary ambiguity guard in Rack::Multipart::Parser can be bypassed with a quoted boundary value, allowing WAF bypass","text":"rubygems:rack, rubygems:rack, rubygems:rack","url":"https://github.com/advisories/GHSA-p8x9-v4hv-2w4g"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-09T22:18:41.963","score":3.7,"severity":"LOW","desc":"Rack is a modular Ruby web server interface. Prior to 2.2.25, 3.1.23, and 3.2.8, Rack::Multipart::Parser.parse_boundary can skip a leading empty or quoted boundary parameter in a multipart Content-Type header and accept a later parameter. Rack can therefore parse a request body with a boundary…","product":"","seen":1794273221013},"kev":null,"epss":{"epss":0.0024,"pct":0.15179,"at":1794342228430},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}