CVE-2026-16056 Contest Gallery < 30.0.7 - Subscriber+ OpenAI Prompt History Disclosure via post_cg_get_openai_prompts
Authenticated subscribers can read the site's entire stored OpenAI prompt history due to missing capability checks in the Contest Gallery 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-2026-16056?
CVE-2026-16056 is a medium-severity missing authorization vulnerability in Unknown Contest Gallery, published on 4 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Contest Gallery WordPress plugin before 30.0.7 does not perform any capability or nonce check in one of its handlers, allowing any authenticated user down to Subscriber to read the site's entire stored OpenAI prompt history.
Weakness: CWE-862
Which versions are affected by CVE-2026-16056?
How do I fix CVE-2026-16056?
No fix has been published for CVE-2026-16056 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-2026-16056 being exploited?
There is no known exploitation of CVE-2026-16056 in the wild and no public exploit code.
Sources
Also known as GHSA-xp5w-q4v3-mxrm.