Stored cross-site scripting in WebberZone Top 10 WordPress plugin
Key facts
- Attack vector
- Network
- Privileges required
- Low
- 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 WebberZone Top 10 Popular Posts plugin for WordPress is affected in all versions through 4.5.2. Insufficient input sanitization and output escaping let an attacker-controlled instance_id value reach an unescaped HTML class attribute (CWE-79). An authenticated attacker with contributor-level access or above can store arbitrary web scripts that run when a user opens an affected page.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
The WebberZone Top 10 — Popular Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'other_attributes (parsed to inject instance_id) + undeclared is_widget' parameter in all versions up to, and including, 4.5.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit requires setting the undeclared is_widget flag to '1' via block JSON, which activates the vulnerable code path that concatenates the attacker-controlled instance_id value into an unescaped HTML class attribute.
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 WebberZone Top 10 Popular Posts.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-16 Threatist record created from CVE-2026-110290
- 2026-10-16 Alias added: GHSA-x584-88mj-j8c7
References
Other 8
- https://www.wordfence.com/threat-intel/vulnerabilities/id/4db4a201-a7fa-4764-87cb-c54b64adf560?source=cve
- https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/frontend/class-display.php#L170
- https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/frontend/class-display.php#L153
- https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/util/class-helpers.php#L693
- https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/frontend/blocks/class-blocks.php#L142
- https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/frontend/blocks/class-blocks.php#L128
- https://plugins.trac.wordpress.org/changeset/3747022
- https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.3/includes/frontend/class-display.php
More ajay vulnerabilities
- TI-2023-00239 Contextual Related Posts < 3.3.1 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2023-25556 WordPress Top 10 Plugin <= 3.3.2 is vulnerable to Cross Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
- TI-2021-03230 Better Search <= 2.5.2 - Cross-Site Request Forgery to Settings Import CVSS 3.1HIGH 8.8
- TI-2026-84431 Missing authorization in WebberZone Better Search WordPress plugin CVSS 3.1MEDIUM 5.3
- TI-2025-30003 WordPress Contextual Related Posts plugin <= 4.0.2 - Cross Site Scripting (XSS) Vulnerability CVSS 3.1MEDIUM 6.5
- TI-2024-19315 WordPress Better Search plugin <= 3.3.0 - Stored Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
Sources
- CVE-2026-110290 · CVE Program
- CVE-2026-110290 · NVD
- FIRST EPSS
- GHSA-x584-88mj-j8c7 · 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