The uListing plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 2.2.0 via deserialization of untrusted input. This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
CVE-2026-28138 is a medium severity with CVSS 6.6 Vulnerability issue affecting the Plugin Directory Listings WordPress plugin – uListing. It affects Versions up to 2.2.0 and is listed without a confirmed patched release.
CVE-2026-28138 is tracked for the Plugin Directory Listings WordPress plugin – uListing as medium severity with CVSS 6.6. The affected range is Versions up to 2.2.0. No fixed release is listed in this feed entry, so operators should monitor the vendor and reference links before accepting the risk.
| Software Type | Plugin |
|---|---|
| Software Slug |
ulisting
View on wordpress.org
|
| CVE | CVE-2026-28138 |
| Patched Versions |
No patched versions published.
|
| Affected Versions |
Versions up to 2.2.0
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
uListing <= 1.6.6 - Unauthenticated SQL Injection
Listing, Classified Ads & Business Directory – uListing <= 2.0.5 - Privilege Escalation
Listing, Classified Ads & Business Directory – uListing <= 2.0.3 - Unauthenticated SQL Injection
uListing <= 1.6.6 - Missing Authorization
uListing <= 1.6.6 - Unauthenticated Options Changes via wp_route
uListing <= 1.6.6 - Unauthenticated Arbitrary Account Changes
uListing <= 1.6.6 - Unauthenticated Arbitrary Account Creation
uListing <= 1.6.6 - Unauthenticated Wordpress Options Changes via AJAX
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