Quick answers
- Is CVE-2026-109699 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-109699 being exploited in the wild.
- How severe is CVE-2026-109699?
- Medium severity, with a CVSS score of 5.4, published 13 October 2026.
- Which products and versions are affected?
- ThemeGrill User Registration through 5.2.8.
- Is there a fix for CVE-2026-109699?
- Yes: fixed in 5.3.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-109699 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-109699?
- Check whether you run ThemeGrill User Registration 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.
How to fix
- Fixed in: 5.3.0
Technical details
The plugin suffers from broken access control (CWE-639) in its user registration functionality, allowing unauthenticated access to protected pages and functions. An attacker can bypass access restrictions to view or manipulate user data that should be restricted. The vulnerability exists in versions up to 5.2.8 and does not require any prior authentication or user interaction to exploit.
Affected products
- ThemeGrill User Registration through 5.2.8
Timeline
- 2026-10-13: disclosed
- 2026-10-13: patched: Version 5.3.0 released