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CVE-2026-49853

Tornado: Authorization header forwarded across cross-origin redirects in SimpleAsyncHTTPClient PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
tornadoweb / tornadoaffected < 6.5.6

CWE

CWE-200

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.