Adminer is an open-source database management in a single PHP file. In adminer from version 4.0.0 and before 4.7.9 there is a server-side request forgery vulnerability. Users of Adminer versions bundling all drivers (e.g. `adminer.php`) are affected. This is fixed in version 4.7.9.
https://packagist.org/packages/vrana/adminer
https://lists.debian.org/debian-lts-announce/2021/03/msg00002.html
https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6
https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf
https://github.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351