Block Editor Gallery Slider <= 1.1.1 - Missing Authorization to Authenticated (Subscriber+) Limited Post Meta Update
Strategic Overview
- Status
- Patched in 1.1.2
- Affected Plugin
- Block Editor Gallery Slider for WordPress – Image Slider, Gallery Carousel & Lightbox Plugin
- Affected Version
<= 1.1.1- CVSS
- 4.3Medium
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2025-6726
At a glance
CVE-2025-6726 is a medium-severity Missing Authorization vulnerability in the Block Editor Gallery Slider for WordPress WordPress plugin, affecting versions <= 1.1.1. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 1.1.2; sites on affected versions should update now. Disclosed July 2025, reported by Poli.
Vulnerability Overview
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.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.
CWE-862: Missing Authorization
Block Editor Gallery Slider for WordPress <= 1.1.1 carries this weakness at classic_gallery_slider_options(), and reaching it takes an account at Subscriber level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.
Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Block Editor Gallery Slider for WordPress the fix is 1.1.2: builds <= 1.1.1 are affected, anything from 1.1.2 onward is not.
Remediation
Update to version 1.1.2, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Block Editor Gallery Slider for WordPress 1.1.2 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
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