A vulnerability in Wikimedia Foundation's MediaWiki software allows exposure of sensitive information to unauthorized actors. The issue is linked to the program file includes/logging/LogPager.Php. It affects versions before 1.39.12, 1.42.6, and 1.43.1. The CVSS 4.0 base score is low (2.1), indicating limited impact. No known exploits are reported in the wild. There is no explicit patch information provided in the source data.