CVE-2026-7654

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.

PUBLISHED Reserved 2026-05-01 | Published 2026-06-05 | Updated 2026-06-05 | Assigner Wordfence

Problem types

CWE-502 Deserialization of Untrusted Data

Product status

Timeline

Credits

Osvaldo Noe Gonzalez Del Rio finder

References

www.wordfence.com/...-ef86-49bc-b72c-23e43568fef6?source=cve

plugins.trac.wordpress.org/.../Formatter/IdsToCollection.php

plugins.trac.wordpress.org/.../src/Support/ClosureStream.php

plugins.trac.wordpress.org/.../Formatter/IdsToCollection.php

plugins.trac.wordpress.org/...unk/classes/Formatter/Meta.php

plugins.trac.wordpress.org/....16/classes/Formatter/Meta.php

plugins.trac.wordpress.org/...ure/src/Serializers/Native.php

plugins.trac.wordpress.org/...ure/src/Serializers/Native.php

plugins.trac.wordpress.org/.../src/Support/ClosureStream.php

plugins.trac.wordpress.org/...-columns&sfp_email=&sfph_mail=

cve.org (CVE-2026-7654)

nvd.nist.gov (CVE-2026-7654)

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