CVE-2021-4339 uListing <= 1.6.6 - Unauthenticated Information Disclosure

What is CVE-2021-4339?

CVE-2021-4339 is a high-severity missing authorization vulnerability in stylemix Directory Listings WordPress plugin – uListing, published on 7 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The uListing plugin for WordPress is vulnerable to authorization bypass due to a missing capability check in the "ulisting/includes/route.php" file on the /1/api/ulisting-user/search REST-API route in versions up to, and including, 1.6.6. This makes it possible for unauthenticated attackers to retrieve the list of all users and their email address in the database.

Weakness: CWE-862

Which versions are affected by CVE-2021-4339?

It affects 1 product.

Products include Stylemixthemes Ulisting.

How do I fix CVE-2021-4339?

No fix has been published for CVE-2021-4339 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2021-4339 being exploited?

There is no known exploitation of CVE-2021-4339 in the wild and no public exploit code.

Other vulnerabilities in stylemix Directory Listings WordPress plugin – uListing

• CVE-2021-4340 uListing <= 1.6.6 - Unauthenticated SQL Injection Critical 9.8
• CVE-2021-4341 uListing <= 1.6.6 - Unauthenticated Wordpress Options Changes via AJAX Critical 9.8
• CVE-2021-4343 uListing <= 1.6.6 - Unauthenticated Arbitrary Account Creation Critical 9.8
• CVE-2021-4346 uListing <= 1.6.6 - Unauthenticated Arbitrary Account Changes Critical 9.8
• CVE-2021-4370 uListing <= 1.6.6 - Missing Authorization Critical 9.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-99h6-wmg5-777v.