CVE-2026-85653
The Contextual Related Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'other_attributes' Block Parameter in all versions up to, and including, 4.4.1 due to insufficient input sanitization and output escaping.
Does this matter?
Lower severity and a low EPSS score (0.42%). Track it; it rarely justifies an emergency change on its own.
Description
The Contextual Related Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'other_attributes' Block Parameter in all versions up to, and including, 4.4.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
- CVSS 3.1
- 6.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- EPSS
- 0.42% probability · 36th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- security@wordfence.com
EPSS moved from 0.3% on 22 September 2026 to 0.4% on 26 October 2026.
References
- https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.2.4/includes/frontend/blocks/class-blocks.php#L95
- https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.2.4/includes/frontend/class-media-handler.php#L133
- https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.2.4/includes/frontend/class-media-handler.php#L854
- https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.2.4/includes/frontend/class-media-handler.php#L972
- https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.4.0/includes/frontend/blocks/class-blocks.php#L95
- https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.4.0/includes/frontend/class-media-handler.php#L133
- https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.4.0/includes/frontend/class-media-handler.php#L854
- https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.4.0/includes/frontend/class-media-handler.php#L972
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3703115%40contextual-related-posts&new=3703115%40contextual-related-posts
- https://www.wordfence.com/threat-intel/vulnerabilities/id/1ee59a73-c449-462d-9ff0-b652be56b73b?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.