Description

An issue was discovered in the Growth extension in MediaWiki through 1.36.2. Any admin can add arbitrary JavaScript code to the Newcomer home page footer, which can be executed by viewers with zero edits.

Remediation

References

CVE-2021-42048

Related Vulnerabilities

Rukovoditel Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2020-35986)

MediaWiki Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2015-2931)

WordPress 5.9.x Multiple Vulnerabilities (5.9 - 5.9.9)

Oracle JRE CVE-2019-2987 Vulnerability (CVE-2019-2987)

Joomla Missing Authorization Vulnerability (CVE-2019-18674)

Severity

Medium

Classification

CVE-2021-42048 CWE-707 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Tags

Missing Update Known Vulnerabilities