Improper Handling of Highly Compressed Data (Data Amplification) Affecting python3-aiohttp package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.52% (42nd percentile)

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  • Snyk IDSNYK-RHEL7-PYTHON3AIOHTTP-19078360
  • published21 Aug 2026
  • disclosed30 Jul 2026

Introduced: 30 Jul 2026

CVE-2026-59881  (opens in a new tab)
CWE-409  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 python3-aiohttp.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-aiohttp package and not the python3-aiohttp package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the WebSocket client accepts and decompresses frames with the RSV1 bit set even when the permessage-deflate extension was not negotiated, allowing a malicious server to cause unexpected CPU and memory consumption. This issue is fixed in version 3.14.2.

CVSS Base Scores

version 3.1