{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-45062: FrankenPHP: Unsafe Unicode Handling in CGI Path Splitting Allows Execution of Non-PHP Files","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-45062","status":"final","version":"1","initial_release_date":"2026-06-10T17:38:42.454Z","current_release_date":"2026-06-11T14:00:50.845Z","revision_history":[{"date":"2026-06-10T17:38:42.454Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"FrankenPHP is a modern application server for PHP. From version 1.11.2 to before version 1.12.3, the splitPos() function in cgi.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 FrankenPHP into treating a non-.php file as a .php script. In any deployment where the attacker can place content into a file served by FrankenPHP (uploads, file storage, etc.), this can be escalated to remote code execution by crafting a URL whose path triggers either flaw. This issue has been patched in version 1.12.3.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-45062 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-45062"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-45062"},{"category":"external","summary":"https://github.com/php/frankenphp/security/advisories/GHSA-3g8v-8r37-cgjm","url":"https://github.com/php/frankenphp/security/advisories/GHSA-3g8v-8r37-cgjm"},{"category":"external","summary":"https://github.com/php/frankenphp/releases/tag/v1.12.3","url":"https://github.com/php/frankenphp/releases/tag/v1.12.3"}]},"product_tree":{"branches":[{"category":"vendor","name":"php","branches":[{"category":"product_name","name":"frankenphp","branches":[{"category":"product_version","name":">= 1.11.2, < 1.12.3","product":{"name":"php frankenphp >= 1.11.2, < 1.12.3","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:php:frankenphp:\\>\\=_1.11.2\\,_\\<_1.12.3:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-45062","title":"FrankenPHP: Unsafe Unicode Handling in CGI Path Splitting Allows Execution of Non-PHP Files","notes":[{"category":"description","text":"FrankenPHP is a modern application server for PHP. From version 1.11.2 to before version 1.12.3, the splitPos() function in cgi.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 FrankenPHP into treating a non-.php file as a .php script. In any deployment where the attacker can place content into a file served by FrankenPHP (uploads, file storage, etc.), this can be escalated to remote code execution by crafting a URL whose path triggers either flaw. This issue has been patched in version 1.12.3.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v3":{"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"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}