Quick answers
- Is CVE-2026-116391 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-116391 being exploited in the wild.
- How severe is CVE-2026-116391?
- High severity, with a CVSS score of 8.8, published 28 October 2026.
- Which products and versions are affected?
- GS Plugins GS Logo Slider through 3.8.9.
- Is there a fix for CVE-2026-116391?
- Yes: fixed in 3.9.0 and later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-116391 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-116391?
- Check whether you run GS Plugins GS Logo Slider at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 3.9.0 and later
Technical details
PHP object injection vulnerability in GS Logo Slider through version 3.8.9 allows authenticated attackers with contributor privileges to manipulate data deserialization and achieve remote code execution. The vulnerability requires an authenticated attacker with at least contributor-level permissions to exploit. A fix is available in version 3.9.0 and later.
Affected products
- GS Plugins GS Logo Slider through 3.8.9
Timeline
- 2026-10-28: disclosed
- 2026-10-26: advisory: Patchstack advisory published