# CVE-2026-7654: Deserialization in Admin Columns

> Authenticated contributors can achieve remote code execution via PHP object injection in the Admin Columns WordPress plugin.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Jun 2026
- **Updated:** 6 Jun 2026
- **Also known as:** GHSA-h6x4-229g-5f43

## What is CVE-2026-7654?

CVE-2026-7654 is a high-severity unsafe deserialization vulnerability in codepress Admin Columns, published on 5 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Admin Columns plugin for WordPress is vulnerable to PHP Object Injection leading to Remote Code Execution in versions up to and including 7.0.18. This is due to the use of `unserialize()` without an `allowed_classes` restriction in the `IdsToCollection::get_ids_from_string()` function, which processes attacker-controlled post meta values without proper validation. This makes it possible for authenticated attackers with Contributor-level access and above to inject a serialized PHP object into a post's custom meta field and trigger arbitrary code execution by exploiting a bundled POP gadget chain, resulting in remote code execution as the web server user.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2026-7654?


## How do I fix CVE-2026-7654?

No fix has been published for CVE-2026-7654 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7654 being exploited?

There is no known exploitation of CVE-2026-7654 in the wild and no public exploit code.

Public exploit code:

- CVE-2026-7654 Admin Columns PHP Object Injection RCE Exploit (github_poc): https://github.com/izxci/CVE-2026-7654

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7654 and fix it if it is affected.

What it is: CVE-2026-7654 is a high-severity unsafe deserialization vulnerability in codepress Admin Columns, published on 5 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-7654 in the wild and no public exploit code.

Affected product: codepress Admin Columns. 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-2026-7654/ (Markdown: https://insights.sbomify.com/CVE-2026-7654/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7654
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7654
- OSV: https://osv.dev/vulnerability/CVE-2026-7654

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-7654/
Summaries are generated and may contain mistakes; the official description above is the record.