# CVE-2026-39711: stmcan RT-Theme 18 Extensions Sensitive Data Exposure

Source: https://junglewise.ai/threats/cve-2026-39711-stmcan-rt-theme-18-extensions-sensitive-data-exposure  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-08. Updated: 2026-07-24  
License: CC BY 4.0 with a link back

CVE-2026-39711 · Severity: medium · CVSS 5.3 · Published 2026-04-08

The RT-Theme 18 | Extensions plugin for WordPress contains a vulnerability that allows sensitive information to be leaked to unauthorized users. This plugin is typically used to extend the functionality of the RT-Theme 18 website template. An attacker could exploit this to view internal data that is not intended for public access, potentially aiding in further attacks against the website.

Technologies: [Stmcan RT-Theme 18 Extensions](https://junglewise.ai/threats/technologies/rt-theme-18-extensions). Vendors: [Stmcan](https://junglewise.ai/threats/vendors/stmcan).

## Quick answers

**Is CVE-2026-39711 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-39711 being exploited in the wild.

**How severe is CVE-2026-39711?** Medium severity, with a CVSS score of 5.3, published 8 April 2026.

**Which products and versions are affected?** stmcan RT-Theme 18 | Extensions (rt18-extensions) <= 2.5.

**Is there a fix for CVE-2026-39711?** 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-2026-39711 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-39711?** Check whether you run Stmcan RT-Theme 18 Extensions. 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 sensitive data exposure vulnerability (CWE-201) exists in the stmcan RT-Theme 18 | Extensions (rt18-extensions) plugin for WordPress. The flaw occurs due to the improper insertion of sensitive information into data sent by the application, which allows unauthenticated remote attackers to retrieve embedded sensitive data. The attack can be performed over the network without any user interaction. As of the advisory date, no official patch has been released for versions up to and including 2.5.

## Affected products

- stmcan RT-Theme 18 | Extensions (rt18-extensions) <= 2.5

## Timeline

- 2026-01-31: other: Vulnerability reported by researcher Bonds
- 2026-03-02: advisory: Initial advisory published by Patchstack
- 2026-04-08: disclosed: CVE published to NVD

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/Wordpress/Plugin/rt18-extensions/vulnerability/wordpress-rt-theme-18-extensions-plugin-2-5-sensitive-data-exposure-vulnerability?_s_id=cve](https://patchstack.com/database/Wordpress/Plugin/rt18-extensions/vulnerability/wordpress-rt-theme-18-extensions-plugin-2-5-sensitive-data-exposure-vulnerability?_s_id=cve)

## Related threats

- [stmcan RT-Theme 18 Extensions Reflected XSS](https://junglewise.ai/threats/cve-2026-57745-stmcan-rt-theme-18-extensions-reflected-xss)
- [stmcan RT-Theme 18 Extensions PHP object injection](https://junglewise.ai/threats/cve-2026-57744-stmcan-rt-theme-18-extensions-php-object-injection)
- [stmcan RT-Theme 18 Extensions local file inclusion](https://junglewise.ai/threats/cve-2026-57743-stmcan-rt-theme-18-extensions-local-file-inclusion)
- [stmcan RT-Theme 18 Extensions CSRF](https://junglewise.ai/threats/cve-2026-39710-stmcan-rt-theme-18-extensions-csrf)