# CVE-2025-54053: WordPress Groundhogg plugin <= 4.2.2 - PHP Object Injection vulnerability

> An attacker can exploit PHP object injection in the Groundhogg WordPress plugin to potentially execute arbitrary code.

- **Severity:** Medium 6.6 (`CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Aug 2025
- **Updated:** 28 Apr 2026
- **Also known as:** GHSA-c9jc-jv3w-6j48

## What is CVE-2025-54053?

CVE-2025-54053 is a medium-severity unsafe deserialization vulnerability in Adrian Tobey Groundhogg, published on 20 Aug 2025. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Deserialization of Untrusted Data vulnerability in Adrian Tobey Groundhogg groundhogg allows Object Injection.This issue affects Groundhogg: from n/a through <= 4.2.2.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2025-54053?


## How do I fix CVE-2025-54053?

No fix has been published for CVE-2025-54053 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-54053 being exploited?

There is no known exploitation of CVE-2025-54053 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-54053 and fix it if it is affected.

What it is: CVE-2025-54053 is a medium-severity unsafe deserialization vulnerability in Adrian Tobey Groundhogg, published on 20 Aug 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-54053 in the wild and no public exploit code.

Affected product: Adrian Tobey Groundhogg. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-54053/ (Markdown: https://insights.sbomify.com/CVE-2025-54053/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-54053
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-54053
- OSV: https://osv.dev/vulnerability/CVE-2025-54053

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-54053/
Summaries are generated and may contain mistakes; the official description above is the record.