Access Restriction Bypass

Affecting mediawiki/core package, versions >=1.32.0, <1.35.2 || <1.31.12

Report new vulnerabilities
Do your applications use this vulnerable package? Test your applications

Overview

mediawiki/core is a Free software wiki application developed by the Wikimedia Foundation and others.

Note: This package is not maintained on Packagist anymore, but newer releases exist.

Affected versions of this package are vulnerable to Access Restriction Bypass. An issue was discovered in MediaWiki where Special:Contributions can leak that a "hidden" user exists.

Remediation

Upgrade mediawiki/core to version 1.35.2, 1.31.12 or higher.

References

CVSS Score

5.4
medium severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    Low
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    Low
  • Integrity
    Low
  • Availability
    None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:R
Credit
Unknown
CVE
CVE-2021-30156
CWE
CWE-284
Snyk ID
SNYK-PHP-MEDIAWIKICORE-1244519
Disclosed
09 Apr, 2021
Published
09 Apr, 2021