Open redirect endpoint in Datasette
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-601.
Summary
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 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. This problem has been patched in both Datasette 0.65.2 and 1.0a21. To workaround this issue, if Datasette is running behind a proxy, that proxy could be configured to replace // with / in incoming request URLs.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| simonw | datasette | before 0.65.2; 1.0a0 to before 1.0a20 | 0.65.2, 1.0a20 | Patch available | CNA |
| — | datasette (PyPI) | before 0.65.2 | 0.65.2 | Patch available | GHSA-w832-gg5g-x44m |
| — | datasette (PyPI) | 1.0a0 to before 1.0a21 | 1.0a21 | Patch available | GHSA-w832-gg5g-x44m |
- datasette Vendorsimonw Affected before 0.65.2; 1.0a0 to before 1.0a20 Fixed in 0.65.2, 1.0a20 Patch available CNA
- datasette (PyPI) Vendor— Affected before 0.65.2 Fixed in 0.65.2 Patch available GHSA-w832-gg5g-x44m
- datasette (PyPI) Vendor— Affected 1.0a0 to before 1.0a21 Fixed in 1.0a21 Patch available GHSA-w832-gg5g-x44m
Remediation
- Fix · CNA datasette (simonw) Fixed in 0.65.2, 1.0a20
- Fix · GHSA-w832-gg5g-x44m datasette (PyPI) Fixed in 0.65.2 Advisory →
- Fix · GHSA-w832-gg5g-x44m datasette (PyPI) Fixed in 1.0a21 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-64481
- 2026-10-03 Alias added: GHSA-w832-gg5g-x44m
References
Other 5
- https://github.com/simonw/datasette/security/advisories/GHSA-w832-gg5g-x44m
- https://github.com/simonw/datasette/issues/2429
- https://github.com/simonw/datasette/commit/f257ca6edb64848c3b04b54d41e347c54fe57c05
- https://github.com/pypa/advisory-database/tree/main/vulns/datasette/PYSEC-2025-73.yaml
- https://github.com/simonw/datasette
Sources
- CVE-2025-64481 · CVE Program
- CVE-2025-64481 · NVD
- FIRST EPSS
- GHSA-w832-gg5g-x44m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences