In guix-daemon in GNU Guix before 1618ca7, a content-addressed-mirrors file can be written to create a setuid program that allows a regular user to gain the privileges of the build user that runs it (even after the build has ended).
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
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