{"id":"CVE-2026-45135","sourceIdentifier":"security-advisories@github.com","published":"2026-06-23T18:17:52.343","lastModified":"2026-10-25T23:10:00.167","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Caddy is an extensible server platform that uses TLS by default. From 2.7.0 until 2.11.3, the FastCGI transport's splitPos() in modules/caddyhttp/reverseproxy/fastcgi/fastcgi.go misuses golang.org/x/text/search with search.IgnoreCase when the request path contains a non-ASCII byte. Two distinct flaws in that fallback let an attacker mislead Caddy's FastCGI splitting into treating a non-.php (or other configured split_path extension) file as a script. In any deployment where the attacker can place content into a file served via FastCGI (uploads, file storage, etc.), this can be escalated to remote code execution by crafting a URL whose path triggers either flaw. This vulnerability is fixed in 2.11.3."},{"lang":"es","value":"Caddy es una plataforma de servidor extensible que usa TLS por defecto. Desde la 2.7.0 hasta la 2.11.3, la función splitPos() del transporte FastCGI en modules/caddyhttp/reverseproxy/fastcgi/fastcgi.go hace un uso incorrecto de golang.org/x/text/search con search.IgnoreCase cuando la ruta de la solicitud contiene un byte no ASCII. Dos fallos distintos en esa alternativa permiten a un atacante engañar la división FastCGI de Caddy para que trate un archivo que no es .php (u otra extensión de split_path configurada) como un script. En cualquier despliegue donde el atacante pueda colocar contenido en un archivo servido a través de FastCGI (cargas, almacenamiento de archivos, etc.), esto puede escalarse a ejecución remota de código al crear una URL cuya ruta active cualquiera de los fallos. Esta vulnerabilidad está corregida en la 2.11.3."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"caddyserver","product":"caddy","versions":[{"version":">= 2.7.0, < 2.11.3","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-06-23T18:30:00.592778Z","id":"CVE-2026-45135","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-20"},{"lang":"en","value":"CWE-176"},{"lang":"en","value":"CWE-178"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:caddyserver:caddy:*:*:*:*:*:*:*:*","versionStartIncluding":"2.7.0","versionEndExcluding":"2.11.3","matchCriteriaId":"929EBC65-CE84-403E-BF54-03AA66C3B09E"}]}]}],"references":[{"url":"https://github.com/caddyserver/caddy/security/advisories/GHSA-m675-2p33-xv9g","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/caddyserver/caddy/security/advisories/GHSA-m675-2p33-xv9g","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Vendor Advisory"]}]}