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Wpdiscuz CVE-2021-24737

MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2021-10-11 contact@wpscan.com
4.8
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

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

Impact

CVSS score of 4.8 (MEDIUM). Attack characteristics: network attack vector, low complexity, high privileges required, user interaction required. Public proof-of-concept exploit code is available.

Exploit ScenarioDerived

A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.6% exploitation probability (EPSS)

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AnalysisAI

The Comments - wpDiscuz WordPress plugin through 7.3.0 does not properly sanitise or escape the Follow and Unfollow messages before outputting them in the page, which could allow high privilege users. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, 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. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

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 Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. The Comments - wpDiscuz WordPress plugin through 7.3.0 does not properly sanitise or escape the Follow and Unfollow messages before outputting them in the page, which could allow high privilege users to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed. Affected products include: Gvectors Wpdiscuz. Version information: through 7.3.0.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.8 MEDIUM
AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

DescriptionNVD

The Comments - wpDiscuz WordPress plugin through 7.3.0 does not properly sanitise or escape the Follow and Unfollow messages before outputting them in the page, which could allow high privilege users to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.

Threat Intelligence Overview

EPSS Score
0.6%
Top 56% exploitable
Exploit
POC
Public exploit code exists
Data Quality
2 sources
Confidence: Low

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 MEDIUM
CISA KEV No
Public POC Yes
EPSS 0.6%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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
No
Human Impact· derived
Medium

Priority Score

45
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +24
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

Affected Products (CPE)NVD

cpe:2.3:a:gvectors:wpdiscuz:*:*:*:*:*:wordpress:*:*
CVE-2020-24186 CRITICAL POC
10.0 Aug 24

A Remote Code Execution vulnerability exists in the gVectors wpDiscuz plugin 7.0 through 7.0.4 for WordPress, which allo

CVE-2020-13640 CRITICAL POC
9.8 Jun 18

A SQL injection issue in the gVectors wpDiscuz plugin 5.3.5 and earlier for WordPress allows remote attackers to execute

CVE-2024-9488 CRITICAL
9.8 Oct 25

The Comments - wpDiscuz plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including

CVE-2026-22192 HIGH
8.8 Mar 13

Medium severity vulnerability in wpDiscuz (WordPress plugin). wpDiscuz before 7.6.47 contains a stored cross-site script

CVE-2023-47775 HIGH
8.8 Nov 22

Cross-Site Request Forgery (CSRF) vulnerability in gVectors Team Comments - wpDiscuz plugin <= 7.6.11 versions. Rated hi

CVE-2022-43492 HIGH
8.8 Nov 18

Auth. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch

CVE-2026-22199 HIGH
8.7 Mar 13

wpDiscuz before version 7.6.47 contains a vote manipulation vulnerability that allows unauthenticated attackers to artif

CVE-2021-24806 MEDIUM POC
4.3 Nov 08

The wpDiscuz WordPress plugin before 7.3.4 does check for CSRF when adding, editing and deleting comments, which could a

CVE-2026-22193 HIGH
8.1 Mar 13

High severity vulnerability in wpDiscuz (WordPress plugin). wpDiscuz before 7.6.47 contains an SQL injection vulnerabili

CVE-2026-22202 HIGH
8.1 Mar 13

High severity vulnerability in wpDiscuz (WordPress plugin). wpDiscuz before 7.6.47 contains a cross-site request forgery

CVE-2026-22182 HIGH
7.5 Mar 13

High severity vulnerability in wpDiscuz (WordPress plugin). wpDiscuz before 7.6.47 contains an unauthenticated denial of

CVE-2022-23984 HIGH
7.5 Feb 21

Sensitive information disclosure discovered in wpDiscuz WordPress plugin (versions <= 7.3.11). Rated high severity (CVSS

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