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python-tornado

Tornado versions before 6.5.7 contain a vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without properly clearing state. This can lead to leakage of sensitive credentials such as TLS certificates or proxy authentication data across unintended requests. The vulnerability has a medium severity with a CVSS score of 5.9. Multiple specific Tornado package versions are affected. No explicit patch information is provided in the source data.

The vulnerability in Tornado's CurlAsyncHTTPClient arises because pycurl handles are reused across multiple HTTP requests without proper state clearing. This improper reuse allows sensitive credentials, including TLS certificates and proxy authentication information, to persist and potentially be leaked to unintended requests made through the same client instance. The issue affects Tornado versions prior to 6.5.7 and has been assigned CVE-2026-91992 with a CVSS 3.1 base score of 5.9 (medium severity).

Tornado versions before 6.5.7 contain a vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without properly clearing state. This can lead to leakage of sensitive credentials such as TLS certificates or proxy authentication data across unintended requests. The vulner

Python tornado: Tornado before 6.5.7 contains a credential leak vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without proper… (CVE-2026-91992)

tornado

CVE-2026-91992 is a vulnerability in Tornado's CurlAsyncHTTPClient up to version 6.5.6 where sensitive per-request credentials are not properly cleared when reusing curl handles. This can cause leakage of client TLS certificates and proxy authentication credentials to unintended hosts in subsequent requests. The issue affects all Tornado versions prior to 6.5.7 and has a high severity rating.

CVE-2026-91992 affects Tornado's CurlAsyncHTTPClient component in versions before 6.5.7. The vulnerability arises because per-request credentials, including client TLS certificates and proxy authentication credentials, are not cleared properly when curl handles are reused. This flaw can lead to sensitive information from one request leaking into subsequent requests made with the same client instance, potentially exposing credentials to unauthorized actors. The CVSS 4.0 score is 8.2, indicating a high severity vulnerability with network attack vector, high complexity, and partial attack impact on confidentiality.

Detailed information about CVE-2026-91992: Exposure of Sensitive Information to an Unauthorized Actor in tornadoweb tornado affecting tornadoweb tornado. Get re

CVE-2026-91992: Exposure of Sensitive Information to an Unauthorized Actor in tornadoweb tornado - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-91992: Exposure of Sensitive Information to an Unauthorized Actor in tornadoweb tornado


Python tornado: Tornado before 6.5.7 contains a credential leak vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without proper… (CVE-2026-91992)CVE-2026-91992 0 Tornado versions before 6.5.7 contain a vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without properly clearing state. This can lead to leakage of sensitive credentials such as TLS certificates or proxy authentication data across unintended requests. The vulnerability has a medium severity with a CVSS score of 5.9. Multiple specific Tornado package versions are affected. No explicit patch information is provided in the source data. MediumVulnerability#gcve #osv #ubuntu-cve-2026-91992 Join the discussion	GCVE Database	09/15/2026, 16:17:00 UTC Added: 10/22/2026, 17:16:06 UTC
CVE-2026-91992: Exposure of Sensitive Information to an Unauthorized Actor in tornadoweb tornadoCVE-2026-91992 0 CVE-2026-91992 is a vulnerability in Tornado's CurlAsyncHTTPClient up to version 6.5.6 where sensitive per-request credentials are not properly cleared when reusing curl handles. This can cause leakage of client TLS certificates and proxy authentication credentials to unintended hosts in subsequent requests. The issue affects all Tornado versions prior to 6.5.7 and has a high severity rating. HighVulnerability#cve #cve-2026-91992 #gcve Join the discussion	CVE Database V5	09/15/2026, 16:17:00 UTC Added: 09/15/2026, 15:32:48 UTC

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