CVE-2026-18807 ECS < 4.3.13 - Contributor+ Arbitrary Post Binding and Global Preset Modification via Dynamic Repeater Handlers
Contributor-level users can read, alter, and delete post bindings and modify site-wide presets due to missing capability checks in the ECS plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18807?
CVE-2026-18807 is a medium-severity missing authorization vulnerability in Unknown ECS, published on 15 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The ECS WordPress plugin before 4.3.13 does not have capability or ownership checks on its dynamic repeater actions, relying only on a nonce available to any user who can open the page builder, allowing users with a contributor-level account or above to read, alter and delete the binding configuration of posts they do not own and to change the ECS WordPress plugin before 4.3.13's site-wide presets.
Weakness: CWE-862
Which versions are affected by CVE-2026-18807?
How do I fix CVE-2026-18807?
No fix has been published for CVE-2026-18807 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-18807 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18807 exists.
Sources
Also known as GHSA-qp7g-pcqj-v98x.