UBUNTU-CVE-2026-49853

HIGH7.7

Published Jul 14, 2026

Modified 2 months ago

Details

Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, SimpleAsyncHTTPClient shallow-copied redirected requests and removed only the Host header, leaving Authorization, auth_username, auth_password, and auth_mode in place when a redirect changed scheme, host, or port. This issue is fixed in version 6.5.6.

Affected Packages

python-tornado

Ubuntu Pro 16.04 LTS

Affected versions:

4.2.1-1ubuntu24.2.1-1ubuntu34.2.1-1ubuntu3.14.2.1-1ubuntu3.1+esm14.2.1-1ubuntu3.1+esm24.2.1-1ubuntu3.1+esm3

References

REPORT

https://github.com/tornadoweb/tornado/commit/aba2569f7ed7a6bdbef816658fb6b7182531b751

REPORT

https://github.com/tornadoweb/tornado/pull/3626

REPORT

https://github.com/tornadoweb/tornado/releases/tag/v6.5.6