Advanced Custom Fields: Extended: A security weakness
Advanced Custom Fields: Extended is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is <= 0.9.2.3.
- Component
- Advanced Custom Fields: Extended
- Plugin slug
acf-extended- Affected
- <= 0.9.2.3
- Safe version
- See mitigation notes
- Published
- May 12, 2026
This CVE was published May 12, 2026 and is one of 7 known issues for this plugin.
Update, patch or deactivate.
No fixed release is identified. Update Advanced Custom Fields: Extended when a release after 0.9.2.3 becomes available; until then, disable and remove it when the site's risk warrants. The official upstream changelog lists version 0.9.2.6, which is newer than the published affected range. Its changelog does not clearly confirm this specific fix, so it is not counted as a known-safe release.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The The Advanced Custom Fields: Extended plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 0.9.2.3. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N