CVE-2026-34088: 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 issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-34088) in MediaWiki involves the exposure of sensitive information to unauthorized actors, classified under CWE-200. It affects all versions prior to 1.43.7, 1.44.4, and 1.45.2. The CVSS 4.0 score of 1.3 reflects a low-severity issue with network attack vector, low complexity, no privileges required, and user interaction needed. The vulnerability does not involve integrity or availability impacts and is limited to confidentiality exposure. No official remediation level or patch links are provided in the available data.
Potential Impact
The impact is limited to unauthorized disclosure of sensitive information with a low severity rating. There is no indication of integrity or availability compromise. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the Wikimedia Foundation vendor advisory for current remediation guidance. Until an official fix is released, monitor for updates from the vendor. No specific mitigation steps are provided in the current data.
CVE-2026-34088: 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 issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-34088) in MediaWiki involves the exposure of sensitive information to unauthorized actors, classified under CWE-200. It affects all versions prior to 1.43.7, 1.44.4, and 1.45.2. The CVSS 4.0 score of 1.3 reflects a low-severity issue with network attack vector, low complexity, no privileges required, and user interaction needed. The vulnerability does not involve integrity or availability impacts and is limited to confidentiality exposure. No official remediation level or patch links are provided in the available data.
Potential Impact
The impact is limited to unauthorized disclosure of sensitive information with a low severity rating. There is no indication of integrity or availability compromise. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the Wikimedia Foundation vendor advisory for current remediation guidance. Until an official fix is released, monitor for updates from the vendor. No specific mitigation steps are provided in the current data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- wikimedia-foundation
- Date Reserved
- 2026-03-25T17:15:46.521Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a01f78acbff5d86102f1713
Added to database: 5/11/2026, 3:36:42 PM
Last enriched: 5/11/2026, 4:06:33 PM
Last updated: 5/12/2026, 3:53:14 AM
Views: 5
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.