Out-of-bounds Read Affecting python3.12 package, versions <3.12.3-1ubuntu0.10


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.59% (74th percentile)

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  • Snyk IDSNYK-UBUNTU2404-PYTHON312-14167829
  • published26 Feb 2026
  • disclosed1 Dec 2025

Introduced: 1 Dec 2025

CVE-2025-13836  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Ubuntu:24.04 python3.12 to version 3.12.3-1ubuntu0.10 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.12 package and not the python3.12 package as distributed by Ubuntu. See How to fix? for Ubuntu:24.04 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1