CVE-2025-64481
Open redirect endpoint in Datasette
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
2.7
Open redirect endpoint in Datasette
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.
- Record
CVE-2025-64481- CVSS 4.0
- 2.7 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U - Weakness
- CWE-601
- Updated
- 2026-11-02
EUVDEUVD-2025-38040
2.7
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.
- Record
EUVD-2025-38040- CVSS 4.0
- 2.7 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-w832-gg5g-x44m
2.7
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.
- Record
GHSA-w832-gg5g-x44m- CVSS 4.0
- 2.7 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U - Weakness
- CWE-601
- Updated
- 2026-11-02
NVD
2.7
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.
- Record
CVE-2025-64481- CVSS 4.0
- 2.7 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-601
- Updated
- 2026-11-02
OSV
2.7
Open redirect endpoint in Datasette
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.
- Record
CVE-2025-64481- CVSS 4.0
- 2.7 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U - Weakness
- CWE-601
- Updated
- 2026-11-02
OSVGHSA-w832-gg5g-x44m
2.7
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.
- Record
GHSA-w832-gg5g-x44m- CVSS 4.0
- 2.7 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U - Weakness
- CWE-601
- Updated
- 2026-11-02
OSVPYSEC-2025-73
2.7
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.
- Record
PYSEC-2025-73- CVSS 4.0
- 2.7 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
datasettePyPI |
before 0.65.2 | 0.65.2 |
datasettePyPI |
1.0a0 up to 1.0a20 | 1.0a20 |
datasettePyPI |
before 0.65.2, plus listed versions 0.100.110.120.130.14 Show 45 moreShow less0.150.160.170.180.190.200.210.220.22.10.230.23.10.23.20.240.250.25.10.25.20.260.26.10.26.20.270.27.10.280.290.29.10.29.20.29.30.300.30.10.30.20.310.31.10.31.20.320.330.340.350.360.370.37.10.380.390.400.410.420.43 |
0.65.2 |
datasettePyPI |
1.0a0 up to 1.0a21, plus listed versions 1.0a11.0a101.0a111.0a121.0a13 Show 15 moreShow less1.0a141.0a151.0a161.0a171.0a181.0a191.0a21.0a201.0a31.0a41.0a51.0a61.0a71.0a81.0a9 |
1.0a21 |
datasettePyPI |
Not stated | Not evaluated |
Not evaluated means the source gave git commits or a range we can't read, so we can't tell which releases are affected. A fixed version beside it is the source’s own claim.
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-64481 is a low vulnerability (CVSS 2.7) in Simonw Datasette, published November 6, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.41%, the 35th percentile. Fixed in datasette 0.65.2.
References
github.com/simonw/datasette/security/advisories/GHSA-w832-gg5g-x44m
github.com/simonw/datasette/issues/2429
github.com/simonw/datasette/commit/f257ca6edb64848c3b04b54d41e347c54fe57c05
nvd.nist.gov/vuln/detail/CVE-2025-64481
github.com/pypa/advisory-database/tree/main/vulns/datasette/PYSEC-2025-73.yaml
github.com/advisories/GHSA-w832-gg5g-x44m
github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64481.json
github.com/simonw/datasette
Left out here: 87 versions. The JSON record has them.