NVD HIGH: CVE-2026-8134 — Concrete CMS 9.5.0 and below fails to sanitize path traversal sequences in the p...
Concrete CMS 9.5.0 and below fails to sanitize path traversal sequences in the ptComposerFormLayoutSetControlCustomTemplate field when saving page type composer form layouts. An authenticated rogue administrator with composer form editing rights can exploit this to include arbitrary readable files on the server. Combined with the file uploader's extension-only validation (which permits PHP code in
CVE-2026-8134