CVE-2024-6617Public exploitNetwork attack vector

Stored XSS via unescaped CSS setting

Published Sep 13, 2024 · Updated Sep 13, 2024

Stored XSS in NinjaTeam Header Footer Custom Code before 1.2 allows remote authenticated users to execute scripts through its CSS setting. The plugin stores CSS input without sufficient sanitization or output escaping, so a closing style tag can introduce a script element into rendered pages. Administrator privileges are required, and exposure is limited to multisite installations or sites that disable unfiltered_html; a visitor must load an injected page for the script to run.

CVSS severity4.8
Medium
EPSS probability0.36%
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 NinjaTeam Header Footer Custom Code before 1.2 allows remote authenticated users to execute scripts through its CSS setting. The plugin stores CSS input without sufficient sanitization or output escaping, so a closing style tag can introduce a script element into rendered pages. Administrator privileges are required, and exposure is limited to multisite installations or sites that disable unfiltered_html; a visitor must load an injected page for the script to run.

The record

CVE
CVE-2024-6617
Published
Sep 13, 2024
Updated
Sep 13, 2024
Vendor
Ninja Team
Product
NinjaTeam Header Footer Custom Code
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 13, 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 <1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Ninja Team · NinjaTeam Header Footer Custom Codeversion=0 <1.2

Published CVSS scores

4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8CISA ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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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