CVE-2025-66471

Red Hat Security Advisory: RHOAI 3.4.4 - Red Hat OpenShift AI

Description

A decompression handling flaw has been discovered in urllib3. When streaming a compressed response, urllib3 can perform decoding or decompression based on the HTTP Content-Encoding header (e.g., gzip, deflate, br, or zstd). The library must read compressed data from the network and decompress it until the requested chunk size is met. Any resulting decompressed data that exceeds the requested amount is held in an internal buffer for the next read operation. The decompression logic could cause urllib3 to fully decode a small amount of highly compressed data in a single operation. This can result in excessive resource consumption (high CPU usage and massive memory allocation for the decompressed data; CWE-409) on the client side, even if the application only requested a small chunk of data.

Metrics

Severity
high
no public PoC known
8.9
Source: nvd-v4
50.4 %
High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
0.7 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-08-27 14:50 UTC
CWE-409

Weakness classes (CWE)

  • CWE-409Base

    Improper Handling of Highly Compressed Data (Data Amplification)

    The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output.

    cwe.mitre.org →

Affected operating systems

  • linux

    debian / aomtrixie

  • linux

    redhat / enterprise_linux9.0

  • linux

    redhat / enterprise_linux10.0

  • linux

    redhat / enterprise_linux8.0

  • linux

    redhat / enterprise_linux_ai3.0

  • linux

    ubuntu / ffmpegbionic

  • linux

    ubuntu / ffmpegfocal

  • linux

    ubuntu / ffmpegjammy

  • linux

    ubuntu / ffmpegnoble

  • linux

    ubuntu / ffmpegxenial

  • linux

    ubuntu / pyasn1jammy

  • linux

    ubuntu / pyasn1noble

  • linux

    ubuntu / pyasn1resolute

  • linux

    debian / starlettetrixie

Affected products

Products and version ranges extracted from the vendor/CERT advisory. A range like „<4.14.6“ implies the update recommendation „upgrade to 4.14.6 or later“.

  • aiohttp

    aiohttp3.14.0

  • Atlassian

    BambooData Center LTS 10.2.22

  • Atlassian

    BambooData Center LTS 12.1.10

  • Atlassian

    BitbucketData Center 10.4.2

  • Atlassian

    BitbucketData Center LTS 10.2.6

  • Atlassian

    BitbucketData Center LTS 9.4.23

  • Atlassian

    ConfluenceData Center LTS 10.2.15

  • Atlassian

    ConfluenceData Center LTS 9.2.23

  • Atlassian

    Crucible4.9.13

  • Atlassian

    Fisheye4.9.13

  • Atlassian

    JiraData Center LTS 10.3.24

  • Atlassian

    JiraData Center LTS 11.3.10

  • axios

    axios0.19.0 – 0.31.1

  • axios

    axios1.0.0 – 1.15.2

  • axios

    axios1.0.0 – 1.16.0

  • axios

    axios1.7.0 – 1.16.0

  • axios

    axios0.32.0

  • beaugunderson

    ip-address10.1.1

  • bitnami

    argo-workflows3.0.0

  • bitnami

    jupyterlab4.0.0

  • bitnami

    jupyterlab

  • bitnami

    mlflow

  • bitnami

    pillow10.3.0

  • bitnami

    pillow5.1.0

References & sources

Linked CVEs

Show 118 more CVEs
IDCVE-2025-66471