CVE-2021-32670

Datasette is an open source multi-tool for exploring and publishing data. The `?_trace=1` debugging feature in Datasette does not correctly escape generated HTML, resulting in a [reflected cross-site scripting](https://owasp.org/www-community/attacks/xss/#reflected-xss-attacks) vulnerability. This vulnerability is particularly relevant if your Datasette installation includes authenticated features using plugins such as [datasette-auth-passwords](https://datasette.io/plugins/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.

• CWE-79

• https://datasette.io/plugins/datasette-auth-passwordsVendor Advisory
• https://github.com/simonw/datasette/issues/1360Issue Tracking, Patch, Third Party Advisory
• https://github.com/simonw/datasette/security/advisories/GHSA-xw7c-jx9m-xh5gThird Party Advisory
• https://owasp.org/www-community/attacks/xss/#reflected-xss-attacksThird Party Advisory
• https://pypi.org/project/datasette/Release Notes, Third Party Advisory
• https://datasette.io/plugins/datasette-auth-passwordsVendor Advisory
• https://github.com/simonw/datasette/issues/1360Issue Tracking, Patch, Third Party Advisory
• https://github.com/simonw/datasette/security/advisories/GHSA-xw7c-jx9m-xh5gThird Party Advisory
• https://owasp.org/www-community/attacks/xss/#reflected-xss-attacksThird Party Advisory
• https://pypi.org/project/datasette/Release Notes, Third Party Advisory

Published

Jun 7, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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