Medium severity4.3NVD Advisory· Published Sep 1, 2021· Updated Jun 17, 2026
CVE-2021-39186
CVE-2021-39186
Description
GlobalNewFiles is a MediaWiki extension maintained by Miraheze. Prior to commit number cee254e1b158cdb0ddbea716b1d3edc31fa4fb5d, the username column of the GlobalNewFiles special page is vulnerable to a stored XSS. Commit number cee254e1b158cdb0ddbea716b1d3edc31fa4fb5d contains a patch. As a workaround, one may disallow <,> (or other characters required to insert html/js) from being used in account names so an XSS is not possible.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2<cee254e1b158cdb0ddbea716b1d3edc31fa4fb5d+ 1 more
- (no CPE)range: <cee254e1b158cdb0ddbea716b1d3edc31fa4fb5d
- (no CPE)range: < cee254e1b158cdb0ddbea716b1d3edc31fa4fb5d
Patches
Vulnerability mechanics
References
3- github.com/miraheze/GlobalNewFiles/commit/cee254e1b158cdb0ddbea716b1d3edc31fa4fb5dnvdPatchThird Party Advisory
- phabricator.miraheze.org/T7935nvdExploitThird Party Advisory
- github.com/miraheze/GlobalNewFiles/security/advisories/GHSA-57p5-hqjq-h7vgnvdThird Party Advisory
News mentions
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