[ CVE-2026-121509 · Published 3 Nov 2026 ]
Vulnerability in Headless CMS Plugin
CVSS 5.3
EPSS <1%No fix listed yet
[ Why it matters ]Priority signals
- Public proof-of-concept exploit exists (CISA SSVC)
[ Description ]Official description
A security flaw has been discovered in Headless CMS Plugin up to 2.0.4 on WordPress. This affects the function get_required_post_data of the file /wp-json/rae/v1/post of the component REST API. The manipulation of the argument post_id/post_slug results in information disclosure. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
[ 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.