{"id":"CVE-2026-77281","revision":"7ea77780a41e4a94af6bb7f7d5a7569b","records":[{"revision":"7ea77780a41e4a94af6bb7f7d5a7569b","observedAt":"2026-10-25T16:19:04.694+00:00","statement":{"source":"nvd","id":"CVE-2026-77281","aliases":[],"title":"Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite() ca…","description":"Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite() can pass attacker-controlled replacement bytes through buildQueryString for a second placeholder expansion when a rewrite URI ends with a literal question mark, allowing injected environment or request-variable placeholders to disclose data and, when the file provider is registered, allowing injected file placeholders to disclose readable files. The  issue is fixed in version 2.11.4.","state":0,"publishedAt":"2026-09-17T21:17:37.89+00:00","modifiedAt":"2026-09-24T21:16:28.12+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/caddyserver/caddy/commit/176b043b0104cee3f894023cd5a598ac29e404bb","https://github.com/caddyserver/caddy/pull/7761","https://github.com/caddyserver/caddy/releases/tag/v2.11.4","https://github.com/caddyserver/caddy/security/advisories/GHSA-j8px-rmrx-76h9"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77281","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-94","CWE-178","CWE-770"],"productCriteria":[],"sourceDates":{"published":"2026-09-17T21:17:37.890","lastModified":"2026-09-24T21:16:28.120"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-77281","identifiers":["CVE-2026-77281"]},"retained":false,"historicalAffected":[]}],"coverage":[]}