CVE-2025-32072Network attack vector

Feed HTML injection via unescaped newpage message

Published Apr 11, 2025 · Updated Nov 3, 2025

HTML injection in MediaWiki FeedUtils 1.39 through 1.43 allows remote attackers to inject markup into page-creation feed entries. FeedUtils::formatDiffRow2 passes the localized newpage message to Html::rawElement, causing markup selected through the uselang parameter to be emitted without escaping. Exploitation requires a feed item for a newly created wikitext page; the demonstrated result is malformed or attacker-shaped feed HTML, not established script execution in a normal browser.

CVSS severity6.9
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTML injection in MediaWiki FeedUtils 1.39 through 1.43 allows remote attackers to inject markup into page-creation feed entries. FeedUtils::formatDiffRow2 passes the localized newpage message to Html::rawElement, causing markup selected through the uselang parameter to be emitted without escaping. Exploitation requires a feed item for a newly created wikitext page; the demonstrated result is malformed or attacker-shaped feed HTML, not established script execution in a normal browser.

The record

CVE
CVE-2025-32072
Published
Apr 11, 2025
Updated
Nov 3, 2025
Vendor
Wikimedia Foundation
Product
MediaWiki
Classifications
CWE-116, CAPEC-500, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 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=1.39 <=1.43

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wikimedia Foundation · MediaWikiversion=1.39 <=1.43

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-116Improper Encoding or Escaping of Output
CAPEC-500WebView Injection
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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