Cross-site scripting in keesiemeijer Related Posts by Taxonomy
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Related Posts by Taxonomy plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'related_posts_by_tax' shortcode in all versions up to, and including, 2.7.6 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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| keesiemeijer | Related Posts by Taxonomy | up to 2.7.6 | — | No fix listed | CNA |
- Related Posts by Taxonomy Vendorkeesiemeijer Affected up to 2.7.6 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-0916
- 2026-10-03 Alias added: GHSA-rmqp-hhcc-3f7m
References
Other 3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0582fe7d-884c-4019-837a-861d36ccc842?source=cve
- https://plugins.trac.wordpress.org/browser/related-posts-by-taxonomy/tags/2.7.6/includes/functions.php#L259
- https://plugins.trac.wordpress.org/browser/related-posts-by-taxonomy/tags/2.7.7/includes/functions.php#L259
More keesiemeijer vulnerabilities
- TI-2025-01299 Custom Post Type Date Archives <= 2.7.1 - Missing Authorization to Unauthenticated Arbitrary Shortcode Execution CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-0916 · CVE Program
- CVE-2026-0916 · NVD
- FIRST EPSS
- GHSA-rmqp-hhcc-3f7m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences