Cross-site scripting in gbsdeveloper Multi Post Carousel by Category
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Multi Post Carousel by Category plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'slides' shortcode attribute in all versions up to, and including, 1.4. This is due to insufficient input sanitization and output escaping on the user-supplied 'slides' parameter in the post_slides_shortcode function. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Why it matters now
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 |
|---|---|---|---|---|---|
| gbsdeveloper | Multi Post Carousel by Category | up to 1.4 | — | No fix listed | CNA |
- Multi Post Carousel by Category Vendorgbsdeveloper Affected up to 1.4 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-1275
- 2026-10-03 Alias added: GHSA-9479-m26h-g85h
References
Other 3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b27ecbf7-e97d-42c0-98d4-c235edf40669?source=cve
- https://plugins.trac.wordpress.org/browser/multi-post-carousel/trunk/multi-post-carousel.php#L174
- https://plugins.trac.wordpress.org/browser/multi-post-carousel/tags/1.4/multi-post-carousel.php#L174
More gbsdeveloper vulnerabilities
- TI-2024-11021 Category Post Slider <= 1.4 - Authenticated (Contributor+) Stored Cross-Site Scripting CVSS 3.1MEDIUM 6.4
- TI-2025-08585 Ultimate Multi Design Video Carousel <= 1.4 - Authenticated (Editor+) Stored Cross-Site Scripting CVSS 3.1MEDIUM 5.5
- TI-2025-21806 WordPress WP Ride Booking plugin <= 2.4 - Cross Site Request Forgery (CSRF) Vulnerability CVSS 3.1MEDIUM 4.3
Sources
- CVE-2026-1275 · CVE Program
- CVE-2026-1275 · NVD
- FIRST EPSS
- GHSA-9479-m26h-g85h · 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