RHSA-2026:98110HighCVSS 7.5

Red Hat Security Advisory: python-tornado security update

Published
November 11, 2026
Last Modified
November 11, 2026

🔗 CVE IDs covered (1)

CVE-2026-82397 →

📋 Description

CVE-2026-82397 — python-tornado: Tornado: Denial of Service via excessive URL-encoded body fields

🎯 Affected products14

  • Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • python-tornado-0:6.5.10-0.el9_6.1.src as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • python-tornado-debugsource-0:6.5.10-0.el9_6.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • python-tornado-debugsource-0:6.5.10-0.el9_6.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • python-tornado-debugsource-0:6.5.10-0.el9_6.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • python-tornado-debugsource-0:6.5.10-0.el9_6.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • python3-tornado-0:6.5.10-0.el9_6.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • python3-tornado-0:6.5.10-0.el9_6.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • python3-tornado-0:6.5.10-0.el9_6.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • python3-tornado-0:6.5.10-0.el9_6.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • python3-tornado-debuginfo-0:6.5.10-0.el9_6.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • python3-tornado-debuginfo-0:6.5.10-0.el9_6.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • python3-tornado-debuginfo-0:6.5.10-0.el9_6.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • python3-tornado-debuginfo-0:6.5.10-0.el9_6.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Restrict request payload sizes or maximum form field counts at an upstream web application firewall (WAF) or reverse proxy layer before HTTP requests reach the Tornado application worker.

🔗 References (4)