CVE-2021-39186

2021-09-0121:15:07

Google

osv.dev

mediawiki

globalnewfiles

stored xss

AI Score

5.7

Confidence

High

EPSS

0.001

Percentile

41.3%

JSON

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.