CMSimple CVE debriefs

These pages are published after PatchSiren validates generated defensive summaries against stored public CVE and source evidence.

HIGH CMSimple CVE published 2026-09-22

CVE-2026-88418

CVE-2026-88418 is a high-severity vulnerability in CMSimple 5.24 that allows unauthenticated attackers to execute remote code on the web server. The vulnerability is caused by CSRF protection being disabled by default, which enables an attacker to induce a logged-in administrator's browser to issue a forged content-save request with a text payload containing a scripting marker. This marker is stored verba [truncated]