CVE-2025-62702Public exploitNetwork attack vector

Stored XSS via unescaped system messages

Published Oct 21, 2025 · Updated Oct 21, 2025

Stored XSS in Wikimedia Foundation MediaWiki PageTriage before 1.44 allows remote authenticated users to execute scripts in reviewers' browsers. The showIp.js code passes two unescaped system messages to jQuery append() and replaceWith(), causing their stored HTML to enter the DOM as executable content. An attacker must be able to edit MediaWiki interface messages; execution occurs when a sysop opens New Pages Feed or selects Show IP.

CVSS severity6.9
Medium
EPSS probability0.32%
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 MediaWiki PageTriage before 1.44 allows remote authenticated users to execute scripts in reviewers' browsers. The showIp.js code passes two unescaped system messages to jQuery append() and replaceWith(), causing their stored HTML to enter the DOM as executable content. An attacker must be able to edit MediaWiki interface messages; execution occurs when a sysop opens New Pages Feed or selects Show IP.

The record

CVE
CVE-2025-62702
Published
Oct 21, 2025
Updated
Oct 21, 2025
Vendor
Wikimedia Foundation
Product
MediaWiki PageTriage Extension
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=master <1.44

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Wikimedia Foundation · MediaWiki PageTriage Extensionversion=master <1.44

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007Command and Scripting Interpreter: JavaScript/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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