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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| kometschuh | Same Category Posts | ≤ 1.1.19 | — |
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=