CVE-2024-4005Public exploitNetwork attack vector

Cross-site script execution via unescaped Facebook identifier

Published Jun 14, 2024 · Updated Mar 13, 2025

Stored XSS in Labschool Social Pixel 2.1 and earlier allows remote authenticated users to execute scripts through a Facebook identifier. The Facebook Identificador setting stores an unescaped quote-breaking payload that is emitted on site pages without safe output encoding. Administrator access is required, and a later site visit triggers script execution even when unfiltered_html is disabled, including on multisite installations.

CVSS severity4.8
Medium
EPSS probability0.42%
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 Labschool Social Pixel 2.1 and earlier allows remote authenticated users to execute scripts through a Facebook identifier. The Facebook Identificador setting stores an unescaped quote-breaking payload that is emitted on site pages without safe output encoding. Administrator access is required, and a later site visit triggers script execution even when unfiltered_html is disabled, including on multisite installations.

The record

CVE
CVE-2024-4005
Published
Jun 14, 2024
Updated
Mar 13, 2025
Vendor
Labschool
Product
Social Pixel
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 2025Record 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 <=2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Labschool · Social Pixelversion=0 <=2.1

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/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')
T1203Exploitation for Client Execution

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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