CVE-2026-91992
MEDIUM
NVD
CVSS Score
5.9
Severity
MEDIUM
Published
Sep 15, 2026
Vendor
unknown
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.