CVE-2026-58026: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor in Wikimedia Foundation MediaWiki
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Parser/Parser.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
AI Analysis
Technical Summary
This vulnerability (CWE-200) in MediaWiki involves the exposure of sensitive information to unauthorized users due to a flaw in the includes/Parser/Parser.Php component. It affects all versions before 1.43.9, 1.44.6, 1.45.4, and 1.46.0. The CVSS 4.0 vector indicates network attack vector with low attack complexity and low privileges required, but user interaction is needed. No official remediation or patch has been documented yet.
Potential Impact
Sensitive information may be disclosed to unauthorized actors, potentially compromising confidentiality. The vulnerability requires network access and some user interaction but low privileges. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround has been provided by the Wikimedia Foundation as of the published date.
CVE-2026-58026: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor in Wikimedia Foundation MediaWiki
Description
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Parser/Parser.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
CVSS v4.0
Score 0.0none
Affected software
pkg:github/wikimedia/mediawikiRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-200) in MediaWiki involves the exposure of sensitive information to unauthorized users due to a flaw in the includes/Parser/Parser.Php component. It affects all versions before 1.43.9, 1.44.6, 1.45.4, and 1.46.0. The CVSS 4.0 vector indicates network attack vector with low attack complexity and low privileges required, but user interaction is needed. No official remediation or patch has been documented yet.
Potential Impact
Sensitive information may be disclosed to unauthorized actors, potentially compromising confidentiality. The vulnerability requires network access and some user interaction but low privileges. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround has been provided by the Wikimedia Foundation as of the published date.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- wikimedia-foundation
- Date Reserved
- 2026-06-27T13:32:37.577Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a45341727e9c79719b998ff
Added to database: 07/01/2026, 15:36:55 UTC
Last enriched: 07/01/2026, 15:53:34 UTC
Last updated: 07/01/2026, 21:28:41 UTC
Views: 3
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