CVE-2026-34093
Detail
Description
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki.
This vulnerability is associated with program files includes/Specials/SpecialUserRights.Php.
This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
Metrics
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CNA: wikimedia-foundation
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/R:A
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0 Severity and Vector Strings:
Base
Score:
NVD assessment
not yet provided.
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Weakness Enumeration
| CWE-ID |
CWE Name |
Source |
|
CWE-200
|
Exposure of Sensitive Information to an Unauthorized Actor |
wikimedia-foundation
|
Change History
4 change records found show changes
CVE Modified by CISA-ADP
6/17/2026 6:38:33 AM
| Action |
Type |
Old Value |
New Value |
| Added |
SSVC |
{"timestamp":"2026-05-11T18:14:58.642936Z","id":"CVE-2026-34093","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}
|
CVE Modified by wikimedia-foundation
6/17/2026 6:38:33 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Affected |
[{"vendor":"Wikimedia Foundation","product":"MediaWiki","defaultStatus":"unaffected","programFiles":["includes/Specials/SpecialUserRights.php"],"repo":"https://gerrit.wikimedia.org/g/mediawiki/core/+/refs/heads/master","versions":[{"version":"*","lessThan":"1.43.7, 1.44.4, 1.45.2","versionType":"semver","status":"affected"}]}]
|
Initial Analysis by NIST
5/18/2026 9:53:22 AM
| Action |
Type |
Old Value |
New Value |
| Added |
CVSS V3.1 |
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
|
| Added |
CPE Configuration |
OR
*cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* versions up to (excluding) 1.43.7
*cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* versions from (including) 1.44.0 up to (excluding) 1.44.4
*cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* versions from (including) 1.45.0 up to (excluding) 1.45.2
|
| Added |
Reference Type |
wikimedia-foundation: https://phabricator.wikimedia.org/T414547 Types: Issue Tracking, Permissions Required, Vendor Advisory
|
New CVE Received from wikimedia-foundation
5/11/2026 2:16:31 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Description |
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki.
This vulnerability is associated with program files includes/Specials/SpecialUserRights.Php.
This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
|
| Added |
CVSS V4.0 |
AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:A/V:X/RE:X/U:X
|
| Added |
CWE |
CWE-200
|
| Added |
Reference |
https://phabricator.wikimedia.org/T414547
|
Quick Info
CVE Dictionary Entry: CVE-2026-34093 NVD
Published Date: 05/11/2026 NVD
Last Modified: 06/17/2026
Source: wikimedia-foundation
|
