Default Permissions Flaw in Wikimedia Foundation's Mediawiki - GrowthExperiments Extension
CVE-2025-62668

6.9MEDIUM

Key Information:

Vendor

The Wikimedia Foundation

Status
Mediawiki - Growthexperiments Extension
Vendor
CVE Published:
18 October 2025

What is CVE-2025-62668?

An issue has been identified in the GrowthExperiments Extension of Wikimedia Foundation’s Mediawiki platform, where incorrect default permissions could lead to unauthorized resource leaks. This vulnerability impacts versions of the GrowthExperiments Extension from master before version 1.39, potentially exposing sensitive data and compromising system integrity. Users are advised to review and update their installations to mitigate risks associated with this flaw.

Affected Version(s)

Mediawiki - GrowthExperiments Extension master < 1.39

References

https://phabricator.wikimedia.org/T402600
https://gerrit.wikimedia.org/r/q/I29a18dbbaf7e2ce2a713233...

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

SomeRandomDeveloper
Urbanecm_WMF
JSON
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CVE-2025-62668 : Default Permissions Flaw in Wikimedia Foundation's Mediawiki - GrowthExperiments Extension