June 29, 2023, 4:15 p.m. |

National Vulnerability Database web.nvd.nist.gov

An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. In Special:CheckUser, a check of the "get edits" type is vulnerable to HTML injection through the User-Agent HTTP request header.

agent check cve extension header html html injection http injection issue request special user-agent vulnerable

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