CVE-2026-4138 DX Unanswered Comments <= 1.7 - Cross-Site Request Forgery via Settings Update
Unauthenticated attackers can modify plugin settings by tricking administrators into clicking a link due to missing nonce validation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-4138?
CVE-2026-4138 is a medium-severity vulnerability in nofearinc DX Unanswered Comments, published on 22 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The DX Unanswered Comments plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.7. This is due to missing nonce validation on the plugin's settings form in the dxuc-unanswered-comments-admin-page.php file. This makes it possible for unauthenticated attackers to modify plugin settings (dxuc_authors_list and dxuc_comment_count) via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Weakness: CWE-352
Which versions are affected by CVE-2026-4138?
How do I fix CVE-2026-4138?
No fix has been published for CVE-2026-4138 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-4138 being exploited?
There is no known exploitation of CVE-2026-4138 in the wild and no public exploit code.
Sources
Also known as GHSA-r8vc-r7mw-hrcg.