USN-7927-1: python-urllib3 Ubuntu

CVSS: UnknownPublished
Published 11-12-2025Last modified 27-04-2026
Open JSON

Vulnerability summary

USN-7927-1 is a vulnerability in python-urllib3 Ubuntu with no CVSS score yet.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
Not scored
0%100%
No EPSS score yet
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 2 · Downstream 0 · Related 2
CVE-2025-66418CVE-2025-66471

Timeline

  1. 11-12-2025
    PublishedVulnerability first disclosed.
  2. 27-04-2026
    Last modifiedVulnerability information updated.

Description

python-urllib3 vulnerabilities Illia Volochii discovered that urllib3 did not limit the steps in a decompression chain. An attacker could possibly use this issue to cause urllib3 to use excessive resources, causing a denial of service. (CVE-2025-66418) Rui Xi discovered that urllib3 incorrectly handled highly compressed data. An attacker could possibly use this issue to cause urllib3 to use excessive resources, causing a denial of service. This issue only affected Ubuntu 24.04 LTS, Ubuntu 25.04, and Ubuntu 25.10. (CVE-2025-66471) For the brotli encoding, the fix for CVE-2025-66471 requires an additional security update in the brotli package.

CVSS metrics

Risk metrics not yet published.

EPSS trend

No EPSS score has been published for this record yet.

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu1 product
  • python-urllib3< 1.25.8-2ubuntu0.4+esm2 | < 1.26.5-1~exp1ubuntu0.4 | < 2.0.7-1ubuntu0.3 | < 2.3.0-3ubuntu0.1

1 vendor · 1 product

References

3 links