CVE-2025-14043 Tainacan <= 1.0.1 - Missing Authorization to Unauthenticated Arbitrary Metadata Section Creation
Unauthenticated attackers can create arbitrary metadata sections in Tainacan WordPress plugin due to missing authorization checks in the REST API.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-14043?
CVE-2025-14043 is a medium-severity missing authorization vulnerability in Tainacan, published on 21 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Tainacan plugin for WordPress is vulnerable to unauthorized metadata section creation due to missing authorization checks in all versions up to, and including, 1.0.1. This is due to the `create_item_permissions_check()` function unconditionally returning true, which bypasses authentication and authorization validation. This makes it possible for unauthenticated attackers to create arbitrary metadata sections for any collection via the public REST API granted they can access the WordPress site.
Weakness: CWE-862
Which versions are affected by CVE-2025-14043?
How do I fix CVE-2025-14043?
No fix has been published for CVE-2025-14043 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-2025-14043 being exploited?
There is no known exploitation of CVE-2025-14043 in the wild and no public exploit code.
Sources
Also known as GHSA-27mc-m39v-wccj.