The ?_trace=1
debugging feature in Datasette does not correctly escape generated HTML, resulting in a reflected cross-site scripting vulnerability.
This vulnerability is particularly relevant if your Datasette installation includes authenticated features using plugins such as datasette-auth-passwords as an attacker could use the vulnerability to access protected data.
Datasette 0.57 and 0.56.1 both include patches for this issue.
If you run Datasette behind a proxy you can workaround this issue by rejecting any incoming requests with ?_trace=
or &_trace=
in their query string parameters.
If you have any questions or comments about this advisory:
* Open a discussion in simonw/datasette
* Email us at swillison+datasette @ gmail.com