Logo Slider – Logo Showcase, Logo Carousel, Logo Gallery and Client Logo Presentation <= 3.8.9 - Authenticated (Contributor+) PHP Object Injection via Asset Cache Post Meta
- ID
- WPSEC-2026-1713
- Plugin
- Logo Slider – Logo Showcase, Logo Carousel, Logo Gallery and Client Logo Presentation (gs-logo-slider)
- Affected
- all versions before 3.9.0
- Remediation
- Update to 3.9.0 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness
- CWE-502
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-27
- Attack surface
- Logo Slider – Logo Showcase, Logo Carousel, Logo Gallery and Client Logo Presentation on WPSec AttackSurface
- Fix released
- Published
Description
The Logo Slider plugin for WordPress is vulnerable to PHP Object Injection via the asset cache post meta ('gsp--gs-logo-slider--assets') in all versions up to, and including, 3.8.9, due to deserialization of untrusted input. The meta value is passed to maybe_unserialize() without restricting allowed classes when a post is viewed on the front end, and the meta key is not protected, so a user who can edit a post can set it as a custom field. This makes it possible for authenticated attackers, with contributor-level access and above, to inject a PHP object. No known POP chain is present in the vulnerable plugin; if a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
References
- https://wpsec.com/vuln/WPSEC-2026-1713/
- https://plugins.svn.wordpress.org/gs-logo-slider/tags/3.9.0/
- https://wordpress.org/plugins/gs-logo-slider/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
This advisory as JSON or Markdown · All advisories: JSON, RSS