Detections
Analytics

Alibaba Cloud Linux 3 : 0035: python3 (ALINUX3-SA-2026:0035)

medium Nessus Plugin ID 298939

Synopsis

The remote Alibaba Cloud Linux host is missing one or more security updates.

Description

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2026:0035 advisory.

 Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

 CVE-2025-12084:
 When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively nested documents.

 CVE-2025-15366:
 The imaplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.

 CVE-2025-15367:
 The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.

 CVE-2026-0865:
 User-controlled header names and values containing newlines can allow injecting HTTP headers.

 CVE-2026-1299:
 The email module, specifically the BytesGenerator class, didnt properly quote newlines for email headers when serializing an email message allowing for header injection when an email is serialized. This is only applicable if using LiteralHeader writing headers that don't respect email folding rules, the new behavior will reject the incorrectly folded headers in BytesGenerator.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

http://mirrors.aliyun.com/alinux/3/cve/alinux3-sa-20260035.xml

Plugin Details

Severity: Medium

ID: 298939

File Name: alinux3_sa_2026-0035.nasl

Version: 1.1

Type: local

Published: 2/13/2026

Updated: 2/13/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.0

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2025-12084

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:platform-python, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:platform-python-debug, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:platform-python-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-test, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-idle, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-tkinter

Required KB Items: Host/local_checks_enabled, Host/Alibaba/release, Host/Alibaba/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 2/10/2026

Vulnerability Publication Date: 12/3/2025

Reference Information

CVE: CVE-2025-12084, CVE-2025-15366, CVE-2025-15367, CVE-2026-0865, CVE-2026-1299