Ampache before version 4.2.2 allows unauthenticated users to perform SQL injection. Refer to the referenced GitHub Security Advisory for details and a workaround. This is fixed in version 4.2.2 and the development branch.
https://github.com/ampache/ampache/releases/tag/4.2.2
https://github.com/ampache/ampache/commit/e92cb6154c32c513b9c07e5fdbf5ac7de81ef5ed
https://github.com/ampache/ampache/security/advisories/GHSA-phr3-mpx5-7826
Source: Mitre, NVD
Published: 2021-04-30
Updated: 2021-05-09
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.02559