Weblate vulnerable to improper sanitization of project backups

Impact

Weblate didn't correctly validate filenames when restoring project backup. It may be possible to gain unauthorized access to
files on the server using a crafted ZIP file.

Patches

This issue has been addressed in Weblate 5.6.2 via https://github.com/WeblateOrg/weblate/commit/b6a7eace155fa0feaf01b4ac36165a9c5e63bfdd.

Workarounds

Do not allow project creation to untrusted users.

References

Thanks to Bryan Cahill for bringing this issue to our attention.

For more information

If you have any questions or comments about this advisory:

• Open a topic in discussions
• Email us at care@weblate.org