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CVE-2026-91992
Linux Debian vulnerability analysis and mitigation

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.

Linux Distribution fix status

Fix availability across major Linux distributions and their releases.

Debian

Affected

bookworm

python-tornado

Affected

sid

python-tornado

Affected

trixie

python-tornado

Affected

SourceNVD

Related Linux Debian vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-91990HIGH8.7
  • Linux Debian logoLinux Debian
  • python3-tornado
NoNoSep 15, 2026
CVE-2026-91992HIGH8.2
  • Linux Debian logoLinux Debian
  • python-tornado
NoNoSep 15, 2026
CVE-2026-91991MEDIUM6.3
  • Linux Debian logoLinux Debian
  • python-tornado
NoNoSep 15, 2026
CVE-2026-91986MEDIUM5.3
  • Linux Debian logoLinux Debian
  • rust-toolset:rhel8::rust-analyzer
NoNoSep 15, 2026
CVE-2026-48785MEDIUM4.8
  • Linux Debian logoLinux Debian
  • apptainer-sle15_7
NoYesSep 15, 2026

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