CVE-2026-58517

MEDIUM

Blocked users can create and edit WikiLambda objects

Title source: cna

Description

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.

References (2)

Core 2

Core References

https://phabricator.wikimedia.org/T428833

https://gerrit.wikimedia.org/r/c/1305376

Scores

CVSS v3 4.3

EPSS 0.0019

EPSS Percentile 9.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-288

Status published

Products (2)

mediawiki/mediawiki 1.43.0 - 1.43.9

The Wikimedia Foundation/Mediawiki - WikiLambda Extension < 1.43.9,1.44.6,1.45.4

Published Jul 01, 2026

Tracked Since Jul 02, 2026