Block Editor Gallery Slider <= 1.1.1 - Missing Authorization to Authenticated (Subscriber+) Limited Post Meta Update
Priority LOW 20CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00276 20th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| krasenslavov | Block Editor Gallery Slider for WordPress – Image Slider, Gallery Carousel & Lightbox Plugin | up to 1.1.1 | — | No fix listed | CNA |
- Block Editor Gallery Slider for WordPress – Image Slider, Gallery Carousel & Lightbox Plugin Vendorkrasenslavov Affected up to 1.1.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-6726
- 2026-10-03 Alias added: GHSA-xmhh-mj7p-f593
References
Other 3
- 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=
More krasenslavov vulnerabilities
- TI-2025-05246 Featured Image Plus – Quick & Bulk Edit with Unsplash <= 1.6.6 - Authenticated (Admin+) Server-Side Request Forgery CVSS 3.1MEDIUM 5.5
- TI-2025-03951 Featured Image Plus <= 1.6.4 - Missing Authorization to Authenticated (Subscriber+) Featured Image Update CVSS 3.1MEDIUM 4.3
Sources
- CVE-2025-6726 · CVE Program
- CVE-2025-6726 · NVD
- FIRST EPSS
- GHSA-xmhh-mj7p-f593 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences