{"id":"EM-20261109-PM91","url":"https://cyber.eventmonitor.net/incident/EM-20261109-PM91/remark42-vulnerability-cve-2026-77463/","type":"cve","title":"Remark42 Vulnerability (CVE-2026-77463)","subtitle":"CVE-2026-77463","subject":"CVE-2026-77463","status":"Developing","severity":"medium","affected":[],"headline":null,"born":"2026-11-09T21:18:29.000Z","firstSignal":"2026-11-05T20:54:09.000Z","lastSignal":"2026-11-09T21:18:29.000Z","updated":"2026-11-09T22:10:41.103Z","revision":1,"life":[{"status":"Born","at":"2026-11-09T21:18:29.000Z","why":"second independent source: C26 GitHub Advisory Database"},{"status":"Developing","at":"2026-11-09T21:18:29.000Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-05T20:54:09.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-09T21:18:29.000Z","what":"Born: second source, C26 GitHub Advisory Database. Page EM-20261109-PM91 created."}],"stages":[{"name":"Disclosed","at":"2026-11-05T21:18:53.727Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-05T21:18:53.727Z","detail":"CVSS 6.5 · EPSS 0.2%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-05T20:54:09.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-05T20:54:09.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":2,"title":"Red Hat: CVE-2026-77463 (moderate)","text":"github.com/umputun/remark42: Remark42: Security control bypass via spoofed IP headers","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-77463.json"},{"at":"2026-11-09T21:18:29.000Z","source":"C26","sourceName":"GitHub Advisory Database","role":"Database","severity":2,"title":"GHSA-56x6-q882-mf27 / CVE-2026-77463: Remark42: Rate limit bypass via unconditional trust of X-Forwarded-For/X-Real-IP headers in direct-internet deployment","text":"go:github.com/umputun/remark42/backend, go:github.com/umputun/remark42","url":"https://github.com/advisories/GHSA-56x6-q882-mf27"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-05T21:18:53.727","score":6.5,"severity":"MEDIUM","desc":"Remark42 is a self-hosted comment engine for blogs, articles, or any other place where readers can add comments. From 1.0.0 until 1.16.2, Remark42 globally trusts True-Client-IP, X-Real-IP, and X-Forwarded-For without verifying that the direct peer is a trusted proxy, and middleware.RealIP…","product":"","seen":1793922090303},"kev":null,"epss":{"epss":0.00219,"pct":0.1245,"at":1794262241103},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}