# CVE-2026-19797: WordPress User Access Manager Reflected XSS in tab_group_section

Source: https://junglewise.ai/threats/cve-2026-19797-wordpress-user-access-manager-reflected-xss-in-tab-group-section  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-09. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-19797 · Severity: medium · CVSS 6.1 · Published 2026-09-09

The User Access Manager plugin for WordPress, used to restrict content access within WordPress sites, contains a reflected cross-site scripting vulnerability. An unauthenticated attacker can inject malicious scripts through a crafted link; if a site administrator clicks the link, the attacker gains the ability to perform administrative actions or steal sensitive data on behalf of that user.

## Quick answers

**Is CVE-2026-19797 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-19797 being exploited in the wild.

**How severe is CVE-2026-19797?** Medium severity, with a CVSS score of 6.1, published 9 September 2026.

**Which products and versions are affected?** User Access Manager User Access Manager up to and including 2.3.18.

**Is there a fix for CVE-2026-19797?** 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-2026-19797 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-19797?** Check whether anything you run is named in the advisory. 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 vulnerability is a reflected XSS flaw in the 'tab_group_section' parameter, caused by insufficient input sanitization and output escaping in the plugin's backend controller. The attack vector is network-based and does not require authentication; however, it does require social engineering to trick a user into clicking a malicious link. An unauthenticated attacker can inject arbitrary JavaScript code that executes in the context of a logged-in administrator's browser session, potentially leading to account compromise or unauthorized modifications to site settings. Patches are available in versions after 2.3.18.

## Affected products

- User Access Manager User Access Manager up to and including 2.3.18

## Timeline

- 2026-09-09: disclosed

## References

- [https://plugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.18/src/Controller/Backend/ControllerTabNavigationTrait.php](https://plugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.18/src/Controller/Backend/ControllerTabNavigationTrait.php)
- [https://plugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.18/src/Controller/BaseControllerTrait.php](https://plugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.18/src/Controller/BaseControllerTrait.php)