PyPI/tornado CVE-2025-67725: high 7.5, EPSS 0.56%
Tornado: Quadratic DoS via Repeated Header Coalescing
Action: Upgrade tornado to 6.5.3 or later.
pip install tornado==6.5.3Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 6.5.3 | - |
Fixed versions
| 6.5.3 |
Sources
- osv: GHSA-c98p-7wgm-6p64
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-c98p-7wgm-6p64
- https://nvd.nist.gov/vuln/detail/CVE-2025-67725
- https://github.com/tornadoweb/tornado/commit/771472cfdaeebc0d89a9cc46e249f8891a6b29cd
- https://github.com/pypa/advisory-database/tree/main/vulns/tornado/PYSEC-2025-266.yaml
- https://github.com/tornadoweb/tornado
- https://github.com/tornadoweb/tornado/releases/tag/v6.5.3
CVE-2025-67725 · published · modified · JSON