CVE-2021-36879 CRITICAL

CVE-2021-36879: WordPress uListing plugin <= 2.0.5 - Unauthenticated Privilege Escalation vulnerability

Vendor Stylemixthemes

Product uListing (WordPress plugin)

Weakness CWE-264

Published September 27, 2021

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

9.8/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality High

Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

Unauthenticated Privilege Escalation vulnerability in WordPress uListing plugin (versions <= 2.0.5). Possible if WordPress configuration allows user registration.

Explanation of Vulnerability in Simple Terms

02Summary

The uListing WordPress plugin version 2.0.5 and earlier contains an authorization flaw that allows unauthenticated attackers to read, modify, or delete site data without logging in. The vulnerability requires no user interaction and can be exploited remotely over the network. Site administrators should update immediately to a version newer than 2.0.5.

What an attacker can do

03Attacker Capabilities

Read, modify, or delete site data without authentication.

Potential impact on your site

04Site Impact

Attackers can compromise your site's data and functionality without needing a user account.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

September 27, 2021 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2021-36879 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/264.html AskarLabs — CWE-264 write-up Permissions, Privileges, and Access Controls

Related vulnerabilities

Identifiers

CVE CVE-2021-36879

CWE CWE-264

CVSS 9.8 / CRITICAL

Affected versions