Stored cross-site scripting in WPAdverts Classifieds Plugin
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The WPAdverts Classifieds Plugin for WordPress by gwin is affected in all versions up to and including 2.3.4. Insufficient input sanitization and output escaping of the 'adverts_location' parameter enable stored cross-site scripting (CWE-79). An unauthenticated attacker can inject arbitrary web scripts into pages that execute whenever a user accesses an injected page.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
The WPAdverts – Classifieds Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'adverts_location' parameter in all versions up to, and including, 2.3.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for the WPAdverts Classifieds Plugin.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-10 Threatist record created from CVE-2026-100178
- 2026-10-10 Alias added: GHSA-prqm-578x-qhj3
- 2026-10-11 CISA SSVC decision points changed
- 2026-10-11 Priority changed: MEDIUM → LOW
References
Other 10
- https://www.wordfence.com/threat-intel/vulnerabilities/id/84d362e2-a0ba-48e6-b4f5-46e080a7eee1?source=cve
- https://plugins.trac.wordpress.org/browser/wpadverts/tags/2.3.4/includes/functions-blocks.php#L483
- https://plugins.trac.wordpress.org/browser/wpadverts/tags/2.3.4/includes/functions-blocks.php#L467
- https://plugins.trac.wordpress.org/browser/wpadverts/tags/2.3.4/blocks/list/templates/list-item.php#L36
- https://plugins.trac.wordpress.org/browser/wpadverts/tags/2.3.4/includes/functions.php#L1878
- https://plugins.trac.wordpress.org/browser/wpadverts/tags/2.3.4/includes/functions.php#L1961
- https://plugins.trac.wordpress.org/browser/wpadverts/tags/2.3.4/includes/defaults.php#L150
- https://plugins.trac.wordpress.org/browser/wpadverts/tags/2.3.4/blocks/publish/class-publish-engine.php#L422
- https://plugins.trac.wordpress.org/browser/wpadverts/trunk/readme.txt?rev=3732587
- https://plugins.trac.wordpress.org/changeset/3732587/wpadverts/trunk/includes/functions-blocks.php
More gwin vulnerabilities
- TI-2026-10186 Missing authorization in gwin WPAdverts – Classifieds Plugin CVSS 3.1HIGH 7.5
- TI-2024-09370 WPAdverts – Classifieds Plugin <= 2.1.6 - Unauthenticated Stored Cross-Site Scripting via adverts_add Shortcode CVSS 3.1HIGH 7.2
- TI-2024-10094 WPAdverts – Classifieds Plugin <= 2.1.7 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
Sources
- CVE-2026-100178 · CVE Program
- CVE-2026-100178 · NVD
- FIRST EPSS
- GHSA-prqm-578x-qhj3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences