Skip to main content

Ulisting CVE-2021-4341

CRITICAL
Missing Authorization (CWE-862)
2023-06-07 security@wordfence.com
9.8
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.24%.

Exploit ScenarioDerived

A remote attacker could access resources or perform actions without proper authorization checks by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.
No patch listed yet 0.2% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

The uListing plugin for WordPress is vulnerable to authorization bypass via Ajax due to missing capability checks, missing input validation, and a missing security nonce in the stm_update_email_data. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement role-based access control, validate authorization on every request server-side, apply principle of least privilege.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Missing Authorization (CWE-862), which allows attackers to access resources or perform actions without proper authorization checks. The uListing plugin for WordPress is vulnerable to authorization bypass via Ajax due to missing capability checks, missing input validation, and a missing security nonce in the stm_update_email_data AJAX action in versions up to, and including, 1.6.6. This makes it possible for unauthenticated attackers to change any WordPress option in the database. Affected products include: Stylemixthemes Ulisting.

Know when Ulisting gets its next vulnerability

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
PoC Detected
Apr 08, 2026 - 17:16 vuln.today
Public exploit code
CVE Published
Jun 07, 2023 - 02:15 nvd
CRITICAL 9.8

DescriptionCVE.org

The uListing plugin for WordPress is vulnerable to authorization bypass via Ajax due to missing capability checks, missing input validation, and a missing security nonce in the stm_update_email_data AJAX action in versions up to, and including, 1.6.6. This makes it possible for unauthenticated attackers to change any WordPress option in the database.

Threat Intelligence Overview

EPSS Score
0.2%
Top 53% exploitable
Exploit
POC
Public exploit code exists
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC Yes
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
CRITICAL severity + public POC available
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

69
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)CVE.org

cpe:2.3:a:stylemixthemes:ulisting:*:*:*:*:*:wordpress:*:*
CVE-2021-4340 CRITICAL POC
9.8 Jun 07

The uListing plugin for WordPress is vulnerable to generic SQL Injection via the ‘listing_id’ parameter in versions up t

CVE-2021-4343 CRITICAL POC
9.8 Jun 07

The Unauthenticated Account Creation plugin for WordPress is vulnerable to Unauthenticated Account Creation in versions

CVE-2021-4346 CRITICAL POC
9.8 Jun 07

The uListing plugin for WordPress is vulnerable to Unauthenticated Arbitrary Account Changes in versions up to, and incl

CVE-2021-4381 CRITICAL POC
9.8 Jun 07

The uListing plugin for WordPress is vulnerable to authorization bypass via wp_route due to missing capability checks, a

CVE-2021-4370 CRITICAL POC
9.8 Jun 07

The uListing plugin for WordPress is vulnerable to authorization bypass as most actions and endpoints are accessible to

CVE-2021-36879 CRITICAL POC
9.8 Sep 27

Unauthenticated Privilege Escalation vulnerability in WordPress uListing plugin (versions <= 2.0.5). Rated critical seve

CVE-2021-4357 CRITICAL POC
9.1 Jun 07

The uListing plugin for WordPress is vulnerable to authorization bypass due to missing capability checks, and a missing

CVE-2021-4339 HIGH POC
7.5 Jun 07

The uListing plugin for WordPress is vulnerable to authorization bypass due to a missing capability check in the "ulisti

CVE-2021-4345 MEDIUM POC
6.5 Jun 07

The uListing plugin for WordPress is vulnerable to authorization bypass due to missing capability and nonce checks on th

CVE-2021-36880 CRITICAL
9.8 Sep 27

Unauthenticated SQL Injection (SQLi) vulnerability in WordPress uListing plugin (versions <= 2.0.3), vulnerable paramete

CVE-2026-62031 CRITICAL
9.3 Oct 10

Unauthenticated SQL injection in StyleMix's uListing WordPress plugin, affecting versions up to and including 2.2.0, all

CVE-2025-1657 HIGH
8.8 Mar 15

The Directory Listings WordPress plugin - uListing plugin for WordPress is vulnerable to unauthorized modification of da

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy