USN-8027-1: Python-Multipart vulnerabilities

Publication date

11 February 2026

Overview

Several security issues were fixed in Python-Multipart.


Packages

Details

It was discovered that Python-Multipart incorrectly handled certain
regular expressions. An attacker could possibly use this issue to cause
Python-Multipart to consume excessive resources, leading to a regular
expression denial of service. This issue only affected Ubuntu 22.04 LTS.
(CVE-2024-24762)

It was discovered that Python-Multipart did not properly sanitize line
breaks during user input. An attacker could use this issue to send
arbitrary input, thus preventing other requests from being processed,
resulting in a denial of service. This issue was only fixed in
Ubuntu 24.04 LTS. (CVE-2024-53981)

It was discovered that Python-Multipart was vulnerable to path traversal
attacks. An attacker could possibly craft and upload files outside the
target directory, resulting in remote code execution. (CVE-2026-24486)

It was discovered that Python-Multipart incorrectly handled certain
regular expressions. An attacker could possibly use this issue to cause
Python-Multipart to consume excessive resources, leading to a regular
expression denial of service. This issue only affected Ubuntu 22.04 LTS.
(CVE-2024-24762)

It was discovered that Python-Multipart did not properly sanitize line
breaks during user input. An attacker could use this issue to send
arbitrary input, thus preventing other requests from being processed,
resulting in a denial of service. This issue was only fixed in
Ubuntu 24.04 LTS. (CVE-2024-53981)

It was discovered that Python-Multipart was vulnerable to path traversal
attacks. An attacker could possibly craft and upload files outside the
target directory, resulting in remote code execution. (CVE-2026-24486)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
24.04 LTS noble python3-multipart –  0.0.9-1ubuntu0.1~esm1  
22.04 LTS jammy python3-multipart –  0.0.5-2ubuntu0.1~esm1  

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