[ CVE-2026-19856 · Published 2 Oct 2026 ]
Vulnerability in Unknown All in One SEO
CVSS 6.5
EPSS <1%No fix listed yet
[ Description ]Official description
The All in One SEO WordPress plugin before 5.0.2.1 does not correctly determine which shortcodes are present in content derived from user input before deciding which ones to strip, allowing unauthenticated users to execute arbitrary shortcodes registered on the site. On sites upgraded from older versions the protection is disabled outright, making the issue reachable without any crafted input.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.