CVE-2025-31476Network attack vector

JavaScript execution via unchecked URL schemes

Published Apr 7, 2025 · Updated Jun 12, 2025

Cross-site scripting in tarteaucitron.js before 1.20.1 allows remote authenticated users to execute JavaScript through a clicked link. The getElemAttr function returned url and data-url attribute values after fixSelfXSS without requiring an HTTP or HTTPS scheme. Exploitation requires high-privilege access to site source or a CMS plugin plus victim interaction, enabling phishing-related data theft or interface changes.

CVSS severity4.8
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in tarteaucitron.js before 1.20.1 allows remote authenticated users to execute JavaScript through a clicked link. The getElemAttr function returned url and data-url attribute values after fixSelfXSS without requiring an HTTP or HTTPS scheme. Exploitation requires high-privilege access to site source or a CMS plugin plus victim interaction, enabling phishing-related data theft or interface changes.

The record

CVE
CVE-2025-31476
Published
Apr 7, 2025
Updated
Jun 12, 2025
Vendor
Amauri Champeaux
Product
tarteaucitron.js
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 12, 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=< 1.20.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Amauri Champeaux · tarteaucitron.jsversion=< 1.20.1

Published CVSS scores

4.8GitHub, Inc.CVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

Public exploit references

No public exploit references are available in this record.

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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