CVE-2026-91992

MediumCVSS 5.9/10Last modified Sep 17, 2026

Description

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.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Sep 15, 2026
Last modified
Sep 17, 2026
NVD status
Deferred

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CVE-2026-91992: Medium severity, CVSS 5.9 | Vulnix