CVE-2025-62664Public exploitNetwork attack vector

Stored XSS via raw system-message HTML insertion

Published Oct 18, 2025 · Updated Oct 20, 2025

Stored XSS in Wikimedia Foundation ImageRating before 1.39 allows remote authenticated users to run script in visitors’ browsers. The ImageRating.js handler passes unescaped mw.msg() output for imagerating-category to jQuery .html(), inserting the system message as raw HTML. A registered account with the default rateimage right, VoteNY, a rated local file, and $wgUseXssLanguage enabled are required; a victim must open the crafted special-page request.

CVSS severity6.9
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 Wikimedia Foundation ImageRating before 1.39 allows remote authenticated users to run script in visitors’ browsers. The ImageRating.js handler passes unescaped mw.msg() output for imagerating-category to jQuery .html(), inserting the system message as raw HTML. A registered account with the default rateimage right, VoteNY, a rated local file, and $wgUseXssLanguage enabled are required; a victim must open the crafted special-page request.

The record

CVE
CVE-2025-62664
Published
Oct 18, 2025
Updated
Oct 20, 2025
Vendor
Wikimedia Foundation
Product
ImageRating
Classifications
CWE-79, CAPEC-592, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 20, 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=master <1.39

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wikimedia Foundation · ImageRatingversion=master <1.39

Published CVSS scores

6.9Wikimedia FoundationCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1189Drive-by Compromise

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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