GS Team Members <= 2.8.2 - Authenticated (Contributor+) PHP Object Injection via Asset Cache Post Meta
- ID
- WPSEC-2026-0880
- Plugin
- Team Members – A WordPress Team Plugin with Gallery, Grid, Carousel, Slider, Table, List, and More (gs-team-members)
- Affected
- all versions before 2.8.3
- Remediation
- Update to 2.8.3 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 Low · Affected versions None seen among sites WPSec scans, 2026-10-14
- Attack surface
- GS Team Members on WPSec AttackSurface
- Fix released
- Published
Description
The Team Members plugin for WordPress is vulnerable to PHP Object Injection via the asset cache post meta (gsp--gs-team--assets) in all versions up to, and including, 2.8.2, due to deserialization of the stored meta value with maybe_unserialize() without restricting classes, combined with the meta key not being protected from being set through custom fields or XML-RPC. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject a PHP object that is instantiated when the post is viewed or previewed. No known POP chain is present in the vulnerable software. 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-2026-0880/
- https://plugins.svn.wordpress.org/gs-team-members/tags/2.8.3/
- https://wordpress.org/plugins/gs-team-members/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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