Quick answers
- Is CVE-2026-16056 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-16056 being exploited in the wild.
- How severe is CVE-2026-16056?
- Medium severity, with a CVSS score of 4.3, published 4 August 2026.
- Which products and versions are affected?
- Contest Gallery before 30.0.7.
- Is there a fix for CVE-2026-16056?
- A patch was published on 2026: Fixed in version 30.0.7 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-16056 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-16056?
- Check whether you run Contest Gallery at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an authorization bypass (CWE-862) in the post_cg_get_openai_prompts AJAX handler. The handler lacks both capability checks and nonce verification, allowing any authenticated user to call it directly via admin-ajax.php. An attacker with a low-privilege Subscriber account can enumerate and exfiltrate the entire OpenAI prompt history from the wp_postmeta or similar storage table by varying the cg_start pagination parameter. No special preconditions beyond basic WordPress authentication are required. The vulnerability is fixed in version 30.0.7; prior versions are affected.
Affected products
- Contest Gallery Contest Gallery before 30.0.7
Timeline
- 2026-07-27: disclosed
- 2026-08-04: advisory: CVE-2026-16056 published
- 2026: patched: Fixed in version 30.0.7