CVE-2025-68937

Forgejo before 13.0.2 allows attackers to write to unintended files, and possibly obtain server shell access, because of mishandling of out-of-repository symlink destinations for template repositories. This is also fixed for 11 LTS in 11.0.7 and later.

Weakness

The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.

Potential Mitigations

• Follow the principle of least privilege when assigning access rights to entities in a software system.
• Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/27.html

References

• https://blog.gitea.com/release-of-1.24.7/
• https://codeberg.org/forgejo/forgejo/milestone/27340
• https://codeberg.org/forgejo/forgejo/milestone/29156
• https://codeberg.org/forgejo/forgejo/src/branch/forgejo/release-notes-published/11.0.7.md
• https://codeberg.org/forgejo/forgejo/src/branch/forgejo/release-notes-published/13.0.2.md
• https://codeberg.org/forgejo/security-announcements/issues/43