CVE-2026-89138 Missing authorization in Filter Gallery
Authenticated subscribers can modify arbitrary post titles, content, and metadata due to missing authorization checks in the Filter Gallery plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-89138?
CVE-2026-89138 is a medium-severity missing authorization vulnerability in farazfrank Filter Gallery, published on 18 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Filter Gallery plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.1.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the title and content of arbitrary WordPress posts, write the _wp_attachment_image_alt meta key on arbitrary posts, and create or overwrite arbitrary ufg_gallery_* options.
Weakness: CWE-862
Which versions are affected by CVE-2026-89138?
How do I fix CVE-2026-89138?
No fix has been published for CVE-2026-89138 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-89138 being exploited?
There is no known exploitation of CVE-2026-89138 in the wild and no public exploit code.
Sources
Also known as GHSA-38vh-9c8v-rmgw.