Bug 2500672 (CVE-2026-49853) - CVE-2026-49853 tornado: Tornado: Information disclosure via improper handling of credentials during HTTP redirects
Summary: CVE-2026-49853 tornado: Tornado: Information disclosure via improper handling...
Keywords:
Status: NEW
Alias: CVE-2026-49853
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2521859 2521860 2521861
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-14 21:04 UTC by OSIDB Bzimport
Modified: 2026-10-12 11:14 UTC (History)
49 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:67146 0 None None None 2026-09-14 13:38:02 UTC
Red Hat Product Errata RHSA-2026:67147 0 None None None 2026-09-14 13:33:40 UTC
Red Hat Product Errata RHSA-2026:80741 0 None None None 2026-10-12 11:14:46 UTC

Description OSIDB Bzimport 2026-07-14 21:04:18 UTC 
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.
Comment 3 Jon Orris 2026-09-14 13:33:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:67147 https://access.redhat.com/errata/RHSA-2026:67147
Comment 4 Jon Orris 2026-09-14 13:37:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:67146 https://access.redhat.com/errata/RHSA-2026:67146
Comment 5 Jon Orris 2026-10-12 11:14:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:80741 https://access.redhat.com/errata/RHSA-2026:80741
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