Improper Handling of Highly Compressed Data (Data Amplification) Affecting python-tornado package, versions <0:6.5.10-1.el9_8.1


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.53% (43rd percentile)

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  • Snyk IDSNYK-ROCKY9-PYTHONTORNADO-20948733
  • published15 Oct 2026
  • disclosed1 Oct 2026

Introduced: 1 Oct 2026

NewCVE-2026-103262  (opens in a new tab)
CWE-409  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 python-tornado to version 0:6.5.10-1.el9_8.1 or higher.
This issue was patched in RLSA-2026:82040.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-tornado package and not the python-tornado package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:9 relevant fixed versions and status.

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 accumulates in memory without size limits, causing the application process to be killed by out-of-memory conditions.

CVSS Base Scores

version 3.1