CVE-2020-15164

Critical

Description

in Scratch Login (MediaWiki extension) before version 1.1, any account can be logged into by using the same username with leading, trailing, or repeated underscore(s), since those are treated as whitespace and trimmed by MediaWiki. This affects all users on any wiki using this extension. Since version 1.1, comments by users whose usernames would be trimmed on MediaWiki are ignored when searching for the verification code.

SeverityCritical
CVSS10.0
Exploit probability—
ProductScratch-wiki Scratch Login
PublishedAug 28, 2020
First seenAug 28, 2020

How to fix

Update
  • scratch-wiki scratch_login1.1 or later

Affected products

ProductAffected versionsFixed in
scratch-wiki scratch_loginv < 1.11.1

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