Open redirect endpoint in Datasette
### Impact Deployed instances of Datasette prior to `0.65.2` and `1.0a21` include an open redirect vulnerability. Hits to the path `//example.com/foo/bar/` (the trailing slash is required) will redirect the user to `https://example.com/foo/bar`. ### Patches This problem has been patched in both Datasette `0.65.2` and `1.0a21`. ### Workarounds If Datasette is running behind a proxy that proxy could be configured to replace `//` with `/` in incoming request URLs.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-64481US | — | — | ||
Datasette is an open source multi-tool for exploring and publishing data. In versions 0.65.1 and below and 1.0a0 through 1.0a19, deployed instances of Datasette include an open red… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/pypa/advisory-database/tree/main/vulns/datasette/PYSEC-2025-73.yamlWEB
- https://github.com/simonw/datasettePACKAGE
- https://github.com/simonw/datasette/commit/f257ca6edb64848c3b04b54d41e347c54fe57c05WEB
- https://github.com/simonw/datasette/issues/2429WEB
- https://github.com/simonw/datasette/security/advisories/GHSA-w832-gg5g-x44mWEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-64481ADVISORY
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