CVE-2026-21441: urllib3 vulnerable to decompression-bomb safeguard bypass when following HTTP redirects (streaming API)
Overview
- Severity
- High (CVSS 7.5)
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Jan
- Released
- 2026-01-09
- Last Updated
- 2026-02-19
- EPSS Score
- 0.03% (percentile: 8.7%)
Affected Products (7)
Mariner
- azl3 tensorflow 2.16.1-9 on Azure Linux 3.0
Other
- 20831-17084
- 20827-17084
- 20807-17084
- 20389-17086
- 20530-17086
- 20890-17086
Revision History
- 2026-01-09: Information published.
- 2026-01-11: Information published.
- 2026-01-12: Information published.
- 2026-01-16: Information published.
- 2026-01-20: Information published.
- 2026-01-21: Information published.
- 2026-02-19: Information published.