CVE-2026-7654
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk47th percentile - higher than 47% of all known CVEs
Summary
The Admin Columns plugin for WordPress up to version 7.0.18 is vulnerable to PHP Object Injection leading to Remote Code Execution due to the use of unserialize() without an allowed_classes restriction in the IdsToCollection::get_ids_from_string() function. This allows authenticated attackers with Contributor-level access or higher to inject a serialized PHP object into a post's custom meta field and trigger arbitrary code execution via a bundled POP gadget chain.
Risk Assessment
An attacker could execute arbitrary code as the web server user, leading to full compromise of the WordPress site.
Recommendation
Update the Admin Columns plugin to version 7.0.19 or later.
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Original NVD description (English source)
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.