CVE-2025-61643Network attack vector

Suppressed-change disclosure via unchecked RCFeed notification

Published Feb 2, 2026 · Updated Feb 2, 2026

Information disclosure in MediaWiki versions before 1.39.14, 1.43.4, or 1.44.1 allows remote attackers to read suppressed recent changes. RecentChangeRCFeedNotifier::notifyRCFeeds forwards each entry to configured RCFeeds without rejecting a nonzero rc_deleted flag. Exposure requires RCFeeds to be configured and a privileged action to create an already-suppressed entry; the reported consequence is disclosure only.

CVSS severity6.1
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in MediaWiki versions before 1.39.14, 1.43.4, or 1.44.1 allows remote attackers to read suppressed recent changes. RecentChangeRCFeedNotifier::notifyRCFeeds forwards each entry to configured RCFeeds without rejecting a nonzero rc_deleted flag. Exposure requires RCFeeds to be configured and a privileged action to create an already-suppressed entry; the reported consequence is disclosure only.

The record

CVE
CVE-2025-61643
Published
Feb 2, 2026
Updated
Feb 2, 2026
Vendor
Wikimedia Foundation
Product
MediaWiki
Classifications
CWE-212
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

2.7Wikimedia FoundationCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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.

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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-212Improper Removal of Sensitive Information Before Storage or Transfer

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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