Same Category Posts <= 1.1.19 - Authenticated (Author+) Stored Cross-Site Scripting via Widget Title Placeholder
Vulnerability Description
The Same Category Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the widget title placeholder functionality in all versions up to, and including, 1.1.19. This is due to the use of `htmlspecialchars_decode()` on taxonomy term names before output, which decodes HTML entities that WordPress intentionally encodes for safety. 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Athiwat Tiprasaharn
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/70434876-4876-4da8-9af1-6f6ef5632f26?source=cve
- https://plugins.trac.wordpress.org/browser/same-category-posts/tags/1.1.19/same-category-posts.php#L665
- https://plugins.trac.wordpress.org/browser/same-category-posts/tags/1.1.19/same-category-posts.php#L639
- https://plugins.trac.wordpress.org/browser/same-category-posts/tags/1.1.19/same-category-posts.php#L707
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3444428%40same-category-posts&new=3444428%40same-category-posts&sfp_email=&sfph_mail=
Affected Vendor
kometschuh
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