CVE-2021-29622 log

Severity Medium
Remote Yes
Type Open redirect
A security issue has been found in Prometheus before version 2.27.1. In 2.23.0, Prometheus changed its default UI to the New UI. To ensure a seamless transition, the URL's prefixed by /new redirect to /. Due to a bug in the code, it is possible for an attacker to craft an URL that can redirect to any other URL in the /new endpoint.

If a user visits a Prometheus server with a specially crafted address (e.g.<url>), they can be redirected to an arbitrary URL. E.g. if a user visits, they will be redirected to

Note: Users who use a --web.external-url= flag with a path (e.g. --web.external-url= are not affected.
Group Package Affected Fixed Severity Status Ticket
AVG-1971 prometheus 2.26.0-2 2.27.1-1 Medium Fixed
Date Advisory Group Package Severity Type
25 May 2021 ASA-202105-25 AVG-1971 prometheus Medium open redirect