Deserialization in Codepress Admin Columns
CVE-2026-7654
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.
Vulnerability class: Insecure Deserialization
EPSS: 0.009 (57.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Codepress Admin Columns — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2026-7654?
- CVE-2026-7654 is a high-severity vulnerability in Codepress Admin Columns, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-06-05.
- How severe is CVE-2026-7654?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2026-7654 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.