Tornado has incomplete validation of cookie attributes
Priority LOW 38CWE-74Published · Updated
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub.
Summary
Values passed to the `domain`, `path`, and `samesite` arguments of `RequestHandler.set_cookie` were not completely validated in versions of Tornado prior to 6.5.5. In particular, semicolons would be allowed, which could be used to inject attacker-controlled values for other cookie attributes.
Why it matters now
Fix Fixed tornado (PyPI): 6.5.5
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | tornado (PyPI) | before 6.5.5 | 6.5.5 | Patch available | GHSA-78cv-mqj4-43f7 |
- tornado (PyPI) Vendor— Affected before 6.5.5 Fixed in 6.5.5 Patch available GHSA-78cv-mqj4-43f7
Remediation
- Fix · GHSA-78cv-mqj4-43f7 tornado (PyPI) Fixed in 6.5.5 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-78cv-mqj4-43f7
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences