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OpenAdvisories
High RLSA-2026:98080 1 CVE

Important: python-tornado security update

Published Nov 13, 2026 · Updated Nov 13, 2026

Summary

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.

Security Fix(es):

* tornado: Tornado: Denial of Service via decompression bomb in CurlAsyncHTTPClient (CVE-2026-103262)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 12

ReleasePackageFixed in
Rocky Linux · 10 python-tornado-debugsource 0:6.5.10-1.el10_3
Rocky Linux · 10 python-tornado-debugsource 0:6.5.10-1.el10_3
Rocky Linux · 10 python-tornado-debugsource 0:6.5.10-1.el10_3
Rocky Linux · 10 python-tornado-debugsource 0:6.5.10-1.el10_3
Rocky Linux · 10 python3-tornado 0:6.5.10-1.el10_3
Rocky Linux · 10 python3-tornado 0:6.5.10-1.el10_3
Rocky Linux · 10 python3-tornado 0:6.5.10-1.el10_3
Rocky Linux · 10 python3-tornado 0:6.5.10-1.el10_3
Rocky Linux · 10 python3-tornado-debuginfo 0:6.5.10-1.el10_3
Rocky Linux · 10 python3-tornado-debuginfo 0:6.5.10-1.el10_3
Rocky Linux · 10 python3-tornado-debuginfo 0:6.5.10-1.el10_3
Rocky Linux · 10 python3-tornado-debuginfo 0:6.5.10-1.el10_3

Vulnerabilities 1

  • High 7.5

    Tornado before 6.5.9 Denial of Service via CurlAsyncHTTPClient

    Tornado versions before 6.5.9 contain an unbounded memory accumulation vulnerability in CurlAsyncHTTPClient that allows remote attackers to cause denial of service by sending a compressed response. Attackers can send a gzip-encoded decompression bomb that acc…

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2544534
  • advisory
    https://access.redhat.com/errata/RHSA-2026:98080