CVE-2026-58517

MEDIUM CVSS 4.0: 6.9 EPSS 0.33%
Updated Jul 10, 2026
Mediawiki
Parameter Value
CVSS 6.9 (MEDIUM)
Affected Versions 1.43.0 — 1.45.4
Fixed In 1.43.9
Type CWE-288 (Authentication Bypass Using Alternate Path)
Vendor Mediawiki
Public PoC No

Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Authentication Bypass. This issue affects Mediawiki - WikiLambda Extension: from * before 1.43.9,1.44.6,1.45.4.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption

CVSS Vector v4.0

Vulnerable Products 3

Configuration From (including) Up to (excluding)
Mediawiki Mediawiki
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
1.43.0 1.43.9
Mediawiki Mediawiki
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
1.44.0 1.44.6
Mediawiki Mediawiki
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
1.45.0 1.45.4