{"id":"CVE-2021-32670","aliases":["EUVD-2021-0051","GHSA-gff3-739c-gxfq","GHSA-xw7c-jx9m-xh5g","PYSEC-2021-89"],"status":"published","title":"Reflected cross-site scripting issue in Datasette","description":"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 `\u0026_trace=` in their query string parameters.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0096,"percentile":0.62,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2021-06-07T21:20:13Z","modified":"2026-10-20T10:54:45Z","fixes":[{"ecosystem":"PyPI","package":"datasette","fixed_in":["0.56.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"datasette","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.56.1"}]}]},{"source":"osv","ecosystem":"PyPI","package":"datasette","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.56.1"}]}],"versions":["0.10","0.11","0.12","0.13","0.14","0.15","0.16","0.17","0.18","0.19","0.20","0.21","0.22","0.22.1","0.23","0.23.1","0.23.2","0.24","0.25","0.25.1","0.25.2","0.26","0.26.1","0.26.2","0.27","0.27.1","0.28","0.29","0.29.1","0.29.2","0.29.3","0.30","0.30.1","0.30.2","0.31","0.31.1","0.31.2","0.32","0.33","0.34","0.35","0.36","0.37","0.37.1","0.38","0.39","0.40","0.41","0.42","0.43","0.44","0.45","0.45a0","0.45a1","0.45a2","0.45a3","0.45a4","0.45a5","0.46","0.47","0.47.1","0.47.2","0.47.3","0.48","0.49","0.49.1","0.49a0","0.49a1","0.50","0.50.1","0.50.2","0.50a0","0.50a1","0.51","0.51.1","0.51a0","0.51a1","0.51a2","0.52","0.52.1","0.52.2","0.52.3","0.52.4","0.52.5","0.53","0.54","0.54.1","0.54a0","0.55","0.56","0.8","0.9"]},{"source":"osv","ecosystem":"PyPI","package":"datasette","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.56.1"}]}],"versions":["0.10","0.11","0.12","0.13","0.14","0.15","0.16","0.17","0.18","0.19","0.20","0.21","0.22","0.22.1","0.23","0.23.1","0.23.2","0.24","0.25","0.25.1","0.25.2","0.26","0.26.1","0.26.2","0.27","0.27.1","0.28","0.29","0.29.1","0.29.2","0.29.3","0.30","0.30.1","0.30.2","0.31","0.31.1","0.31.2","0.32","0.33","0.34","0.35","0.36","0.37","0.37.1","0.38","0.39","0.40","0.41","0.42","0.43","0.44","0.45","0.45a0","0.45a1","0.45a2","0.45a3","0.45a4","0.45a5","0.46","0.47","0.47.1","0.47.2","0.47.3","0.48","0.49","0.49.1","0.49a0","0.49a1","0.50","0.50.1","0.50.2","0.50a0","0.50a1","0.51","0.51.1","0.51a0","0.51a1","0.51a2","0.52","0.52.1","0.52.2","0.52.3","0.52.4","0.52.5","0.53","0.54","0.54.1","0.54a0","0.55","0.56","0.8","0.9"]}],"products":[{"vendor":"datasette","product":"datasette"},{"vendor":"simonw","product":"datasette"}],"references":[{"url":"https://github.com/simonw/datasette/security/advisories/GHSA-xw7c-jx9m-xh5g","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/simonw/datasette/issues/1360","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://datasette.io/plugins/datasette-auth-passwords","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://owasp.org/www-community/attacks/xss/#reflected-xss-attacks","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://pypi.org/project/datasette/","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory","package"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32670","tags":["advisory"]},{"url":"https://pypi.org/project/datasette","tags":["web"]},{"url":"https://github.com/advisories/GHSA-gff3-739c-gxfq","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/datasette/PYSEC-2021-89.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-xw7c-jx9m-xh5g"},{"url":"https://github.com/simonw/datasette","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-32670","title":"Reflected cross-site scripting issue in Datasette","description":"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 `\u0026_trace=` in their query string parameters.","status":"published","published":"2021-06-07T21:20:13Z","modified":"2024-08-03T23:25:31.015Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:07.014772Z"}],"euvd":[{"id":"EUVD-2021-0051","description":"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 `\u0026_trace=` in their query string parameters.","status":"published","published":"2021-06-07T21:20:13Z","modified":"2024-08-03T23:25:31Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high"}],"updated_at":"2026-11-03T03:24:36.41075Z"}],"ghsa":[{"id":"GHSA-gff3-739c-gxfq","title":"Duplicate Advisory: Reflected cross-site scripting issue in Datasette","description":"## Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-xw7c-jx9m-xh5g. This link is maintained to preserve external references.\n\n## Original Description\nDatasette 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 `\u0026_trace=` in their query string parameters.","status":"withdrawn","published":"2021-06-10T17:22:59Z","modified":"2024-09-16T15:03:13Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:38:02.773864Z"},{"id":"GHSA-xw7c-jx9m-xh5g","title":"Reflected cross-site scripting issue in Datasette","description":"### Impact\n\nThe `?_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.\n\nThis 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.\n\n### Patches\n\nDatasette 0.57 and 0.56.1 both include patches for this issue.\n\n### Workarounds\n\nIf you run Datasette behind a proxy you can workaround this issue by rejecting any incoming requests with `?_trace=` or `\u0026_trace=` in their query string parameters.\n\n### References\n\n- [OWASP guide to reflected cross-site scripting](https://owasp.org/www-community/attacks/xss/#reflected-xss-attacks)\n- [Datasette issue #1360](https://github.com/simonw/datasette/issues/1360)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open a discussion in [simonw/datasette](https://github.com/simonw/datasette/discussions)\n* Email us at `swillison+datasette @ gmail.com`\n","status":"published","published":"2021-06-07T21:47:41Z","modified":"2024-11-18T16:26:15Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium"},{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:38:19.029049Z"}],"nvd":[{"id":"CVE-2021-32670","description":"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 `\u0026_trace=` in their query string parameters.","status":"published","published":"2021-06-07T22:15:07.65Z","modified":"2026-06-17T03:53:23.29Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:54.439974Z"}],"osv":[{"id":"CVE-2021-32670","description":"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 `\u0026_trace=` in their query string parameters.","status":"published","published":"2021-06-07T22:15:07.65Z","modified":"2026-10-20T10:54:45.308580172Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:19.793849Z"},{"id":"GHSA-gff3-739c-gxfq","title":"Duplicate Advisory: Reflected cross-site scripting issue in Datasette","description":"## Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-xw7c-jx9m-xh5g. This link is maintained to preserve external references.\n\n## Original Description\nDatasette 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 `\u0026_trace=` in their query string parameters.","status":"withdrawn","published":"2021-06-10T17:22:59Z","modified":"2024-12-06T05:29:04.349658Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:47.822182Z"},{"id":"GHSA-xw7c-jx9m-xh5g","title":"Reflected cross-site scripting issue in Datasette","description":"### Impact\n\nThe `?_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.\n\nThis 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.\n\n### Patches\n\nDatasette 0.57 and 0.56.1 both include patches for this issue.\n\n### Workarounds\n\nIf you run Datasette behind a proxy you can workaround this issue by rejecting any incoming requests with `?_trace=` or `\u0026_trace=` in their query string parameters.\n\n### References\n\n- [OWASP guide to reflected cross-site scripting](https://owasp.org/www-community/attacks/xss/#reflected-xss-attacks)\n- [Datasette issue #1360](https://github.com/simonw/datasette/issues/1360)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open a discussion in [simonw/datasette](https://github.com/simonw/datasette/discussions)\n* Email us at `swillison+datasette @ gmail.com`\n","status":"published","published":"2021-06-07T21:47:41Z","modified":"2026-07-08T06:28:56.693631657Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high"},{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:47:00.604718Z"},{"id":"PYSEC-2021-89","description":"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 `\u0026_trace=` in their query string parameters.","status":"published","published":"2021-06-07T22:15:00Z","modified":"2023-11-08T04:05:56.311414Z","updated_at":"2026-11-02T15:52:53.449407Z"}]}}