Bug 2533894 (CVE-2026-91992) - CVE-2026-91992 tornado: Tornado: Credential leak via HTTP client handle reuse
Summary: CVE-2026-91992 tornado: Tornado: Credential leak via HTTP client handle reuse
Keywords:
Status: NEW
Alias: CVE-2026-91992
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2540202 2540203 2540204 2540206 2540207 2540208
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-15 15:46 UTC by OSIDB Bzimport
Modified: 2026-09-24 15:29 UTC (History)
49 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-09-15 15:46:10 UTC 
Tornado before 6.5.7 contains a credential leak vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without proper state clearing. Attackers can obtain sensitive credentials by issuing requests through the same client instance, allowing TLS certificates or proxy authentication to persist across unintended requests.
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