CVE-2026-109933: CWE-79 Cross-Site Scripting (XSS) in Otter Blocks
Description
A Cross-Site Scripting (XSS) vulnerability exists in the Otter Blocks WordPress plugin before version 3.2.8. This flaw allows users with contributor-level access or higher to inject arbitrary scripts via block styling values that are not properly sanitized or escaped. These scripts execute when any visitor, including administrators, views the affected post.
Affected software
Otter Blocks
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Otter Blocks WordPress plugin versions prior to 3.2.8 do not properly sanitize and escape user-supplied styling values for blocks before embedding them in inline stylesheets. This improper handling enables users with contributor-level permissions or above to inject malicious JavaScript code. The injected scripts execute in the context of any visitor who views the affected post, potentially leading to unauthorized actions or data exposure.
Potential Impact
Users with contributor-level access or higher can inject arbitrary web scripts that execute in the browsers of visitors and administrators viewing the affected posts. This could lead to session hijacking, defacement, or other client-side attacks depending on the injected payload. The vulnerability affects the confidentiality and integrity of user sessions and site content.
Mitigation Recommendations
Upgrade the Otter Blocks plugin to version 3.2.8 or later, where this vulnerability is fixed. No other mitigation is specified. Patch status is confirmed by the version boundary indicating the fix in 3.2.8.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-10-13T11:14:40.742Z
- State
- PUBLISHED
Threat ID: 6adafb984d27ba8daad7777e
Added to database: 10/23/2026, 06:15:52 UTC
Last enriched: 10/23/2026, 06:31:23 UTC
Last updated: 10/23/2026, 06:55:20 UTC
Views: 2
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