CVE-2025-61639Network attack vectorHinoki check available

Suppressed IP disclosure via omitted access flags

Published Feb 2, 2026 · Updated Feb 2, 2026

Information disclosure in MediaWiki before 1.39.14, 1.43.4, and 1.44.1 allows remote attackers to view suppressed blocked IP addresses. ManualLogEntry::getRecentChange omits the entry's deletion-access flags when creating a recent-change record, so Special:BlockList, recent changes, and related views render the protected IP. Exposure requires an existing suppressed block and access to an affected view; the published impact is limited to disclosure of that IP address.

CVSS severity4.8
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Information disclosure in MediaWiki before 1.39.14, 1.43.4, and 1.44.1 allows remote attackers to view suppressed blocked IP addresses. ManualLogEntry::getRecentChange omits the entry's deletion-access flags when creating a recent-change record, so Special:BlockList, recent changes, and related views render the protected IP. Exposure requires an existing suppressed block and access to an affected view; the published impact is limited to disclosure of that IP address.

The record

CVE
CVE-2025-61639
Published
Feb 2, 2026
Updated
Feb 2, 2026
Vendor
Wikimedia Foundation
Product
MediaWiki
Classifications
CWE-200
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 2, 2026Record 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=* <1.39.14, 1.43.4, 1.44.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wikimedia Foundation · MediaWikiversion=* <1.39.14, 1.43.4, 1.44.1

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
1.7Wikimedia FoundationCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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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