PyPI/tornado CVE-2026-49855: high 7.5, EPSS 0.57%
tornado AsyncHTTPClient accumulates decompressed chunks without size limit (gzip bomb)
Action: Upgrade tornado to 6.5.6 or later.
pip install tornado==6.5.6Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 6.5.6 | - |
Fixed versions
| 6.5.6 |
Sources
- osv: PYSEC-2026-3389
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-mgf9-4vpg-hj56
- https://github.com/tornadoweb/tornado
- https://pypi.org/project/tornado
- https://github.com/advisories/GHSA-mgf9-4vpg-hj56
- https://nvd.nist.gov/vuln/detail/CVE-2026-49855
CVE-2026-49855 · published · modified · JSON