Information Exposure in MediaWiki by Wikimedia Foundation
CVE-2026-34088

1.3LOW

Key Information:

Vendor

Wikimedia Foundation

Status
Mediawiki
Vendor
CVE Published:
11 May 2026

What is CVE-2026-34088?

A vulnerability in MediaWiki allows for the exposure of sensitive information to unauthorized actors. This issue impacts versions of MediaWiki prior to 1.43.7, as well as 1.44.4 and 1.45.2, creating potential risks for users relying on these affected versions.

Affected Version(s)

MediaWiki * < 1.43.7, 1.44.4, 1.45.2

References

https://phabricator.wikimedia.org/T410429

CVSS V4

Score:
1.3
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.