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AlmaLinux 9.2 [TuxCare] Security Update: flatpak-builder (ALMALINUX9.2:CLSA-2026:1793291207)

high Nessus Plugin ID 373740

Synopsis

The AlmaLinux host is missing one or more security updates.

Description

The AlmaLinux 9.2 host has a package installed that is affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1793291207 advisory.

 - A flaw was found in flatpak-builder where Git hooks are not disabled when applying patch sources with use- git-am: true. An attacker who can provide a malicious source containing a Git post-applypatch hook can cause the hook to execute on the host during the build process, resulting in arbitrary code execution with the privileges of the user running flatpak-builder. (CVE-2026-86320)

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

Solution

Update the affected flatpak-builder package based on the guidance in TuxCare advisory ALMALINUX9.2:CLSA-2026:1793291207.

See Also

https://cve.tuxcare.com/els/releases/CLSA-2026:1793291207

http://www.nessus.org/u?53e35b02

Plugin Details

Severity: High

ID: 373740

File Name: tuxcare_alma_linux_9.2_CLSA-2026-1793291207.nasl

Version: 1.1

Type: Local

Published: 10/29/2026

Updated: 10/29/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.51

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-86320

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list, Host/OS/extended-third-party

Exploit Ease: No known exploits are available

Patch Publication Date: 10/29/2026

Vulnerability Publication Date: 9/16/2026

Reference Information

CVE: CVE-2026-86320

CLSA: 2026:1793291207