Bug 2428947 - CVE-2025-13836 python3.6: Excessive read buffering DoS in http.client [fedora-43]
Summary: CVE-2025-13836 python3.6: Excessive read buffering DoS in http.client [fedora...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: python3.6
Version: 43
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Python Maintainers
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["7756d08c-def2-42bc-ae62-a...
Depends On:
Blocks: CVE-2025-13836
TreeView+ depends on / blocked
 
Reported: 2026-01-13 12:42 UTC by Guilherme de Almeida Suckevicz
Modified: 2026-01-14 14:00 UTC (History)
6 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-01-14 14:00:33 UTC
Type: ---
Embargoed:


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Description Guilherme de Almeida Suckevicz 2026-01-13 12:42:29 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.

The following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams

Comment 1 Lumír Balhar 2026-01-14 14:00:33 UTC
We've verified that Python 3.6 and 3.9 are not vulnerable to this vulnerability. The problematic code was introduced multiple times with optimizations, and we verified that it's not in these releases and confirmed our opinion with a reproducer for this vulnerability.


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