{"id":"CVE-2026-45135","revision":"859f8bdaab48459a85bba6876fa8b06a","records":[{"revision":"859f8bdaab48459a85bba6876fa8b06a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-45135","aliases":[],"title":"Caddy: Unsafe Unicode Handling in FastCGI splitPos Allows Execution of Non-PHP Files","description":"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.","state":0,"publishedAt":"2026-06-23T17:56:42.662+00:00","modifiedAt":"2026-06-23T18:30:27.933+00:00","affected":[{"ecosystem":"Vendor product","name":"caddy","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"caddyserver\",\n                    \"product\": \"caddy\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 2.7.0, < 2.11.3\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1,"severity":"HIGH"}],"references":["https://github.com/caddyserver/caddy/security/advisories/GHSA-m675-2p33-xv9g"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45135","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-45135","identifiers":["CVE-2026-45135"]},"retained":false,"historicalAffected":[]}],"coverage":[]}