Bug 2418078 (CVE-2025-13836) - CVE-2025-13836 cpython: Excessive read buffering DoS in http.client
Summary: CVE-2025-13836 cpython: Excessive read buffering DoS in http.client
Keywords:
Status: NEW
Alias: CVE-2025-13836
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-01 19:01 UTC by OSIDB Bzimport
Modified: 2025-12-02 18:36 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2025-12-01 19:01:30 UTC 
When reading an HTTP response from a server, if no read amount is specified, the default behavior will be to use Content-Length. This allows a malicious server to cause the client to read large amounts of data into memory, potentially causing OOM or other DoS.
Note You need to log in before you can comment on or make changes to this bug.