CVE-2025-6726 Block Editor Gallery Slider <= 1.1.1 - Missing Authorization to Authenticated (Subscriber+) Limited Post Meta Update
Authenticated subscribers can modify limited post meta for arbitrary posts due to missing capability checks in the Block Editor Gallery Slider 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-2025-6726?
CVE-2025-6726 is a medium-severity missing authorization vulnerability in krasenslavov Block Editor Gallery Slider for WordPress – Image Slider, Gallery Carousel & Lightbox Plugin, published on 18 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Block Editor Gallery Slider plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the classic_gallery_slider_options() function in all versions up to, and including, 1.1.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update limited post meta for arbitrary posts.
Weakness: CWE-862
Which versions are affected by CVE-2025-6726?
How do I fix CVE-2025-6726?
No fix has been published for CVE-2025-6726 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-2025-6726 being exploited?
There is no known exploitation of CVE-2025-6726 in the wild and no public exploit code.
Sources
Also known as GHSA-xmhh-mj7p-f593.