CVE-2025-62661Network attack vector

Unauthenticated disclosure via unchecked activity counts

Published Oct 21, 2025 · Updated Oct 21, 2025

Incorrect permissions in MediaWiki Thanks and GrowthExperiments 1.43 before 1.44 allow remote attackers to obtain restricted activity counts. ThanksQueryHelper and GrowthExperiments user-information card queries count deleted or restricted edits, new articles, and thanks without viewer-specific read checks. Unauthenticated network access is sufficient; published patch details establish aggregate-count disclosure but do not document access to protected contribution contents.

CVSS severity6.9
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect permissions in MediaWiki Thanks and GrowthExperiments 1.43 before 1.44 allow remote attackers to obtain restricted activity counts. ThanksQueryHelper and GrowthExperiments user-information card queries count deleted or restricted edits, new articles, and thanks without viewer-specific read checks. Unauthenticated network access is sufficient; published patch details establish aggregate-count disclosure but do not document access to protected contribution contents.

The record

CVE
CVE-2025-62661
Published
Oct 21, 2025
Updated
Oct 21, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-276, CAPEC-1
Attack vector
network
Privileges
unauthenticated

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

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
CAPEC-1Accessing Functionality Not Properly Constrained by ACLs

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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