TI-2021-03197 Aliases CVE-2021-4339 GHSA-99h6-wmg5-777v

uListing <= 1.6.6 - Unauthenticated Information Disclosure

MEDIUM 41CWE-862Published 2023-06-07 · Updated 2026-04-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00946 61st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed Directory Listings WordPress plugin – uListing (stylemix): 1.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
StylemixThemes	Directory Listings WordPress plugin – uListing	before 1.7	1.7	Patch available	CNA

Directory Listings WordPress plugin – uListing VendorStylemixThemes Affected before 1.7 Fixed in 1.7 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:stylemixthemes:ulisting::::::wordpress::*	up to 1.6.6	Vulnerable	StylemixThemes

cpe:2.3:a:stylemixthemes:ulisting:*:*:*:*:*:wordpress:*:* Versions up to 1.6.6 Vulnerable ·StylemixThemes

Remediation

Fix · CNA Directory Listings WordPress plugin – uListing (stylemix) Fixed in 1.7

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2023-06-07
stylemix Directory Listings WordPress plugin – uListing 1.7
9 records Highest priority Priority MEDIUM 8 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2021-03238 uListing <= 1.6.6 - Unauthenticated Options Changes via wp_routePriority MEDIUM 52
- TI-2021-03227 uListing <= 1.6.6 - Missing AuthorizationPriority MEDIUM 52
- TI-2021-03200 uListing <= 1.6.6 - Unauthenticated Arbitrary Account CreationPriority MEDIUM 52
Show all 9 records →

Timeline

2026-10-02 Threatist record created from CVE-2021-4339
2026-10-03 Alias added: GHSA-99h6-wmg5-777v

References

TI-2021-14971 WordPress uListing plugin <= 2.0.5 - Unauthenticated Privilege Escalation vulnerability CVSS 3.1CRITICAL 9.8
TI-2021-14972 WordPress uListing plugin <= 2.0.3 - Unauthenticated SQL Injection (SQLi) vulnerability CVSS 3.1CRITICAL 9.8
TI-2021-03238 uListing <= 1.6.6 - Unauthenticated Options Changes via wp_route CVSS 3.1CRITICAL 9.8
TI-2021-03227 uListing <= 1.6.6 - Missing Authorization CVSS 3.1CRITICAL 9.8
TI-2021-03200 uListing <= 1.6.6 - Unauthenticated Arbitrary Account Creation CVSS 3.1CRITICAL 9.8
TI-2021-03203 uListing <= 1.6.6 - Unauthenticated Arbitrary Account Changes CVSS 3.1CRITICAL 9.8

See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences