CVE-2024-2837Public exploitNetwork attack vector

Stored XSS via unescaped titleSize setting

Published Apr 26, 2024 · Updated Aug 1, 2024

Stored XSS in Ninja Team WP Chat App before 3.6.4 allows remote authenticated users to inject scripts through administrator settings. The AJAX design-settings action stores the titleSize value without sanitization or escaping, and the Design tab inserts it into page markup. Administrator access and a visit to the affected Design tab are required; the injected script executes in that visitor's browser, including when unfiltered_html is disabled.

CVSS severity5.4
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Ninja Team WP Chat App before 3.6.4 allows remote authenticated users to inject scripts through administrator settings. The AJAX design-settings action stores the titleSize value without sanitization or escaping, and the Design tab inserts it into page markup. Administrator access and a visit to the affected Design tab are required; the injected script executes in that visitor's browser, including when unfiltered_html is disabled.

The record

CVE
CVE-2024-2837
Published
Apr 26, 2024
Updated
Aug 1, 2024
Vendor
Ninja Team
Product
WP Chat App
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Ninja Team · WP Chat Appversion=0 <3.6.4

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
4.4WordfenceCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Cross-Site Scripting (XSS)
T1059.007JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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