# CVE-2026-25425: ThemeGrill User Registration broken access control

Source: https://junglewise.ai/threats/cve-2026-25425-themegrill-user-registration-broken-access-control  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-15. Updated: 2026-06-15  
License: CC BY 4.0 with a link back

CVE-2026-25425 · Severity: high · CVSS 7.5 · Published 2026-06-15

The User Registration plugin for WordPress, which is used to create custom registration and login forms, contains a security flaw in its access control mechanisms. An unauthenticated attacker can exploit this to perform actions that should be restricted to authorized users. This could lead to service disruptions or unauthorized changes to the site's registration processes.

Technologies: [WPEverest User Registration](https://junglewise.ai/threats/technologies/user-registration). Vendors: [WPEverest](https://junglewise.ai/threats/vendors/wpeverest).

## Quick answers

**Is CVE-2026-25425 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-25425 being exploited in the wild.

**How severe is CVE-2026-25425?** High severity, with a CVSS score of 7.5, published 15 June 2026.

**Which products and versions are affected?** WPEverest User Registration <= 5.1.2.

**Is there a fix for CVE-2026-25425?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-25425 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-25425?** Check whether you run WPEverest 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.

## Technical details

A broken access control vulnerability exists in the ThemeGrill User Registration plugin for WordPress due to missing authorization checks (CWE-862). The flaw allows an unauthenticated remote attacker to execute functions that should be restricted, potentially leading to a denial of service (as indicated by the CVSS availability impact). The vulnerability is present in versions up to 5.1.2 and was addressed in version 5.1.3. Attackers can exploit this over the network without any user interaction or prior authentication.

## Affected products

- ThemeGrill User Registration <= 5.1.2

## Timeline

- 2025-12-28: other: Reported by researcher 0xd4rk5id3
- 2026-05-28: advisory: Patchstack advisory published
- 2026-06-15: disclosed: NVD publication date

## References

- [https://patchstack.com/database/wordpress/plugin/user-registration/vulnerability/wordpress-user-registration-plugin-5-1-2-broken-access-control-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/user-registration/vulnerability/wordpress-user-registration-plugin-5-1-2-broken-access-control-vulnerability?_s_id=cve)

## Related threats

- [ThemeGrill User Registration broken access control](https://junglewise.ai/threats/cve-2026-52701-themegrill-user-registration-broken-access-control)
- [WPEverest User Registration & Membership payment bypass](https://junglewise.ai/threats/cve-2026-1869-wpeverest-user-registration-membership-payment-bypass)
- [WPEverest User Registration IDOR in media deletion](https://junglewise.ai/threats/cve-2026-7651-wpeverest-user-registration-idor-in-media-deletion)
- [WPEverest User Registration & Membership SQL injection in membership_ids](https://junglewise.ai/threats/cve-2026-1865-wpeverest-user-registration-membership-sql-injection-in-membership)