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BREW-DATASETTE-CVE-2021-32670 (CVE-2021-32670)

Vulnerability from osv_homebrew – Published: 2026-08-13 16:42 – Updated: 2026-09-18 15:20 – Source website
VLAI
Details

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 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.

Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "upstream_fixed_in": "0.56.1"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "datasette",
        "purl": "pkg:brew/datasette"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.65.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "git",
    "upstream_evidence": [
      {
        "ecosystem": "GIT",
        "key": "https://github.com/simonw/datasette",
        "name": "https://github.com/simonw/datasette",
        "strategy": "git",
        "subject_version": "0.65.5"
      },
      {
        "ecosystem": "PyPI",
        "key": "pkg:pypi/datasette@0.65.5",
        "name": "datasette",
        "strategy": "registry",
        "subject_version": "0.65.5"
      }
    ]
  },
  "details": "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.",
  "id": "BREW-datasette-CVE-2021-32670",
  "modified": "2026-09-18T15:20:51Z",
  "published": "2026-08-13T16:42:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://datasette.io/plugins/datasette-auth-passwords"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/simonw/datasette/security/advisories/GHSA-xw7c-jx9m-xh5g"
    },
    {
      "type": "ADVISORY",
      "url": "https://owasp.org/www-community/attacks/xss/#reflected-xss-attacks"
    },
    {
      "type": "ADVISORY",
      "url": "https://pypi.org/project/datasette/"
    },
    {
      "type": "FIX",
      "url": "https://github.com/simonw/datasette/issues/1360"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2021-32670",
    "GHSA-gff3-739c-gxfq",
    "GHSA-xw7c-jx9m-xh5g",
    "PYSEC-2021-89"
  ]
}



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