Icinga Web 2 is an open source monitoring web interface, framework and command-line interface. Unauthenticated users can leak the contents of files of the local system accessible to the web-server user, including `icingaweb2` configuration files with database credentials. This issue has been resolved in versions 2.9.6 and 2.10 of Icinga Web 2. Database credentials should be rotated.
https://security.gentoo.org/glsa/202208-05
https://github.com/Icinga/icingaweb2/security/advisories/GHSA-5p3f-rh28-8frw
https://github.com/Icinga/icingaweb2/commit/9931ed799650f5b8d5e1dc58ea3415a4cdc5773d
http://packetstormsecurity.com/files/171774/Icinga-Web-2.10-Arbitrary-File-Disclosure.html