Impact
There is no known practical impact other than it is just possible to manipulate CSRF cookie and XSS the malicious user self.
Patches
Invalid characters of CSRF tokens are stripped after reading cookie. Users should upgrade to 0.12.8 or the latest 0.13.0+dev.
Workarounds
No need for workarounds.
References
N/A
For more information
If you have any questions or comments about this advisory, please post on https://github.com/gogs/gogs/issues/6953.