CVE-2026-12954 Missing authorization in Mapster WP Maps
Authenticated subscribers can arbitrarily modify user meta data in Mapster WP Maps due to missing capability checks and validation.
- 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-2026-12954?
CVE-2026-12954 is a high-severity missing authorization vulnerability in Mapster WP Maps, published on 18 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Mapster WP Maps plugin for WordPress is vulnerable to Arbitrary User Meta Write in all versions up to, and including, 1.23.0 via the `my_profile_update()` function. This is due to the function performing no nonce verification, no capability check, and no allowlist validation on the meta key supplied via the `acf-photo-gallery-groups` POST parameter before passing both the meta key and its corresponding value directly to `update_user_meta()`. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update arbitrary user meta values, though privilege escalation is not possible.
Weakness: CWE-20
Which versions are affected by CVE-2026-12954?
How do I fix CVE-2026-12954?
No fix has been published for CVE-2026-12954 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-2026-12954 being exploited?
There is no known exploitation of CVE-2026-12954 in the wild and no public exploit code.
Sources
Also known as GHSA-gxqq-92xq-fjh7.