In Forgejo before 1.20.5-1, certain endpoints do not check whether an object belongs to a repository for which permissions are being checked. This allows remote attackers to read private issues, read private pull requests, delete issues, and perform other unauthorized actions.

Forgejo before 1.20.5-1 allows 2FA bypass when docker login uses Basic Authentication.

Forgejo before 1.20.5-1 allows remote attackers to test for the existence of private user accounts by appending .rss (or another extension) to a URL.

A vulnerability was found in Forgejo up to 15.0.4. This issue affects the function net.LookupIP of the file services/migrations/allowlist/ismigrateallowed.go of the component Repository Migration Handler. Performing a manipulation results in server-side request forgery. The attack can be initiated remotely. The exploit has been made public and could be used. The patch is named b313bb83f5ff22bcc0378e0e0ca7bbd58303f168. It is recommended to apply a patch to fix this issue. The project maintainer explains: "I don't intend to backport this to v15 or v16 as it is a breaking change."