# CVE-2026-40726: ThemeGrill User Registration Stripe broken access control

Source: https://junglewise.ai/threats/cve-2026-40726-themegrill-user-registration-stripe-broken-access-control  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-17. Updated: 2026-06-17  
License: CC BY 4.0 with a link back

CVE-2026-40726 · Severity: high · CVSS 8.2 · Published 2026-06-17

The User Registration Stripe plugin for WordPress, which handles paid user registrations via Stripe, contains a security flaw that allows unauthorized individuals to bypass access controls. This could allow an attacker to perform actions or access data they should not have permission to see, potentially impacting user management and registration workflows. Business operations may be affected if unauthorized users can manipulate registration processes or access sensitive customer information.

Vendors: [ThemeGrill](https://junglewise.ai/threats/vendors/themegrill).

## Quick answers

**Is CVE-2026-40726 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40726 being exploited in the wild.

**How severe is CVE-2026-40726?** High severity, with a CVSS score of 8.2, published 17 June 2026.

**Which products and versions are affected?** ThemeGrill User Registration Stripe <= 1.3.14.

**Is there a fix for CVE-2026-40726?** 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-2026-40726 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-40726?** Check whether you run ThemeGrill User Registration Stripe 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 User Registration Stripe plugin for WordPress (versions up to and including 1.3.14) is vulnerable to broken access control due to missing authorization checks (CWE-862). An unauthenticated remote attacker can exploit this flaw to execute functions or access data that should be restricted to higher-privileged users. The vulnerability is rated with a CVSS 3.1 score of 8.2, indicating high impact on confidentiality and partial impact on integrity. Users are advised to update to version 1.3.15 or later to remediate the issue.

## Affected products

- ThemeGrill User Registration Stripe <= 1.3.14

## Timeline

- 2025-12-31: other: Reported by researcher 0xd4rk5id3
- 2026-04-16: advisory: Patchstack published advisory
- 2026-06-17: disclosed: CVE published to NVD

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/user-registration-stripe/vulnerability/wordpress-user-registration-stripe-plugin-1-3-14-broken-access-control-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/user-registration-stripe/vulnerability/wordpress-user-registration-stripe-plugin-1-3-14-broken-access-control-vulnerability?_s_id=cve)

## Related threats

- [ThemeGrill User Registration Stripe broken access control](https://junglewise.ai/threats/cve-2026-49081-themegrill-user-registration-stripe-broken-access-control)