Block Editor Gallery Slider <= 1.1.1 - Missing Authorization to Authenticated (Subscriber+) Limited Post Meta Update

Missing Authorization
CVE CVE-2025-6726
CVSS Medium (4.3)
Publicly Published July 17, 2025
Last Updated July 25, 2025
Researcher Poli
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.

References

1 affected software package

Software Type Plugin
Software Slug block-editor-gallery-slider (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 1.1.1
Patched Version
  • 1.1.2
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