Description
The Simple Yearly Archive plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `posttype` attribute of the `SimpleYearlyArchive` shortcode in all versions up to, and including, 2.2.4 due to insufficient input sanitization and output escaping on user supplied attributes. 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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| alphawolf | Simple Yearly Archive | ≤ 2.2.4 | — |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e6b35dc7-bd1d-4cdd-808f-41cf2ebfbb1e?source=cve
- https://wordpress.org/plugins/simple-yearly-archive
- https://plugins.trac.wordpress.org/browser/simple-yearly-archive/trunk/simple-yearly-archive.php#L135
- https://plugins.trac.wordpress.org/browser/simple-yearly-archive/tags/2.2.4/simple-yearly-archive.php#L135
- https://plugins.trac.wordpress.org/browser/simple-yearly-archive/tags/2.2.4/simple-yearly-archive.php#L502
- https://plugins.trac.wordpress.org/changeset?new=3525626%40simple-yearly-archive%2Ftrunk&old=3461850%40simple-yearly-archive%2Ftrunk