{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"critical"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2026-27590","title":"Title"},{"category":"description","text":"Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddy's FastCGI path splitting logic computes the split index on a lowercased copy of the request path and then uses that byte index to slice the original path. This is unsafe for Unicode because `strings.ToLower()` can change UTF-8 byte length for some characters. As a result, Caddy can derive an incorrect `SCRIPT_NAME`/`SCRIPT_FILENAME` and `PATH_INFO`, potentially causing a request that contains `.php` to execute a different on-disk file than intended (path confusion). In setups where an attacker can control file contents (e.g., upload features), this can lead to unintended PHP execution of non-.php files (potential RCE depending on deployment). Version 2.11.1 fixes the issue.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2026-27590","url":"https://www.suse.com/security/cve/CVE-2026-27590"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1258845 for CVE-2026-27590","url":"https://bugzilla.suse.com/1258845"},{"category":"external","summary":"Advisory link for SUSE-SU-2026:0757-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2026-March/024527.html"}],"title":"SUSE CVE CVE-2026-27590","tracking":{"current_release_date":"2026-03-04T00:25:39Z","generator":{"date":"2026-02-26T00:24:52Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2026-27590","initial_release_date":"2026-02-26T00:24:52Z","revision_history":[{"date":"2026-02-26T00:24:52Z","number":"2","summary":"references added,severity changed from  to moderate"},{"date":"2026-02-27T00:25:03Z","number":"3","summary":"severity changed from moderate to critical"},{"date":"2026-03-04T00:25:39Z","number":"4","summary":"references added"}],"status":"interim","version":"4"}}}