HIGH 8.2 NVD
CVE-2026-91992
Tornado before 6.5.7 contains a credential leak vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without proper state cleari
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.
References
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-pw6j-qg29-8w7f
- https://www.vulncheck.com/advisories/tornado-before-6.5.7-credential-leak-via-handle-reuse
This high severity vulnerability with a CVSS score of 8.2 was published on 2026-09-15 via NVD.
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