# CVE-2026-100178: WPAdverts Classifieds Plugin stored XSS in adverts_location

Source: https://junglewise.ai/threats/cve-2026-100178-the-wpadverts-classifieds-plugin-plugin-for-wordpress-is  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-10. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-100178 · Severity: high · CVSS 7.2 · Published 2026-10-10

WPAdverts is a WordPress plugin that enables classifieds and listings on a website. The plugin fails to properly sanitize the 'adverts_location' parameter, allowing unauthenticated attackers to inject malicious scripts that execute when other users view affected pages, potentially stealing credentials or taking over accounts.

Vendors: [WPAdverts](https://junglewise.ai/threats/vendors/wpadverts).

## Quick answers

**Is CVE-2026-100178 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-100178 being exploited in the wild.

**How severe is CVE-2026-100178?** High severity, with a CVSS score of 7.2, published 10 October 2026.

**Which products and versions are affected?** WPAdverts Classifieds Plugin up to and including 2.3.4.

**Is there a fix for CVE-2026-100178?** 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-2026-100178 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-100178?** Check whether you run WPAdverts Classifieds Plugin 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 plugin contains a stored cross-site scripting vulnerability due to insufficient input sanitization and output escaping of the 'adverts_location' parameter. An unauthenticated attacker can inject arbitrary JavaScript that persists in the database and executes in the context of users' browsers when they access pages containing the injected content.

## Affected products

- WPAdverts Classifieds Plugin up to and including 2.3.4

## Timeline

- 2026-10-10: disclosed

## References

- [https://plugins.trac.wordpress.org/browser/wpadverts/tags/2.3.4/blocks/list/templates/list-item.php](https://plugins.trac.wordpress.org/browser/wpadverts/tags/2.3.4/blocks/list/templates/list-item.php)
- [https://plugins.trac.wordpress.org/browser/wpadverts/tags/2.3.4/blocks/publish/class-publish-engine.php](https://plugins.trac.wordpress.org/browser/wpadverts/tags/2.3.4/blocks/publish/class-publish-engine.php)