PyPI/tornado CVE-2026-35536: medium 5.3, EPSS 0.24%
In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.set_cookie were not checked for crafted characters.
Action: Upgrade tornado to 6.5.5 or later.
pip install tornado==6.5.5Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 6.5.5 | - |
Fixed versions
| 6.5.5 |
Sources
- osv: PYSEC-2026-2287
- https://github.com/tornadoweb/tornado/releases/tag/v6.5.5
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-78cv-mqj4-43f7
- https://github.com/advisories/GHSA-fqwm-6jpj-5wxc
CVE-2026-35536 · published · modified · JSON