# CVE-2026-77996: YOOtheme Pro stored XSS in location custom field

Source: https://junglewise.ai/threats/cve-2026-77996-yootheme-pro-stored-xss-in-location-custom-field  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-25. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-77996 · Severity: info · Published 2026-08-25

YOOtheme Pro is a popular page builder for Joomla and WordPress websites. An authenticated user with sufficient privileges can inject malicious scripts into the location custom field, which are then executed when viewed by other users. This could lead to account takeover, credential theft, or defacement for site administrators and other privileged users.

Vendors: [YOOtheme](https://junglewise.ai/threats/vendors/yootheme).

## Quick answers

**Is CVE-2026-77996 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-77996 being exploited in the wild.

**How severe is CVE-2026-77996?** Informational severity, published 25 August 2026.

**Which products and versions are affected?** YOOtheme Pro 1.0.0-5.0.41.

**Is there a fix for CVE-2026-77996?** 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-2026-77996 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-77996?** Check whether you run YOOtheme Pro 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

This vulnerability is a stored cross-site scripting (XSS) flaw in the location custom field of YOOtheme Pro versions 1.0.0 through 5.0.41. The root cause is a lack of proper output escaping when rendering the location field. An authenticated attacker with privileged access (such as a site editor or administrator) can inject malicious JavaScript into the field; the script is stored in the database and executed in the browsers of other users who view the affected page or content. Exploitation requires authentication and elevated privileges. The vulnerability allows for session hijacking, credential harvesting, administrative action execution, or site defacement.

## Affected products

- YOOtheme YOOtheme Pro 1.0.0-5.0.41

## Timeline

- 2026-08-25: disclosed

## References

- [https://www.yootheme.com/](https://www.yootheme.com/)

## Related threats

- [YOOtheme Pro unauthenticated remote code execution in image handler](https://junglewise.ai/threats/cve-2026-102785-joomla-extension-yootheme-com-unauthenticated-remote-code)