Medium severity4.8NVD Advisory· Published Sep 29, 2022· Updated Jun 17, 2026
CVE-2021-42048
CVE-2021-42048
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
5- Range: <=1.36.2
- Range: <=1.36.2
- MediaWiki/Growth extensiondescription
Patches
Vulnerability mechanics
References
2- gerrit.wikimedia.org/r/q/Iaa90a8976834d70caad592e9d1b18510318db537nvdPatchVendor Advisory
- phabricator.wikimedia.org/T289064nvdPatchVendor Advisory
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