Bug 2431310 - CVE-2026-21441 python-urllib3: urllib3 vulnerable to decompression-bomb safeguard bypass when following HTTP redirects (streaming API) [fedora-43]
Summary: CVE-2026-21441 python-urllib3: urllib3 vulnerable to decompression-bomb safeg...
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Fedora
Classification: Fedora
Component: python-urllib3
Version: 43
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Python Maintainers
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["923f2eaa-6fec-4f4f-b7d5-7...
Depends On:
Blocks: CVE-2026-21441
TreeView+ depends on / blocked
 
Reported: 2026-01-20 19:01 UTC by Dhananjay Arunesh
Modified: 2026-01-20 21:43 UTC (History)
7 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-01-20 21:43:56 UTC
Type: ---
Embargoed:

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Description Dhananjay Arunesh 2026-01-20 19:01:29 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Comment 1 Ben Beasley 2026-01-20 21:43:56 UTC 
Per https://www.cve.org/CVERecord?id=CVE-2026-21441, this is fixed in 2.6.3 and later. Fedora 43 has 2.6.3, so this is already fixed.
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