Detections
Analytics

Fedora 45 : buildstream (2026-d77557766a)

critical Nessus Plugin ID 362718

Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 45 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-d77557766a advisory.

 CVE-2026-82331 (CWE-59): tar source plugin symlink escape while fetching a malicious tarball (Python < 3.12). Fixed upstream in 2.8.1 (tar.py extraction filter, #2192).

 Fedora's system python3 is >= 3.12, so the packaged /usr/bin/bst was already using tarfile filters. This update still ships 2.8.1 so BuildStream run on older parallel Pythons (venv / pip / python3.11) is covered.

 Recommend buildstream-plugins-community as well.


Tenable has extracted the preceding description block directly from the Fedora security advisory.

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 buildstream package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2026-d77557766a

Plugin Details

Severity: Critical

ID: 362718

File Name: fedora_2026-d77557766a.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/2/2026

Updated: 10/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.38

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-82331

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:/o:fedoraproject:fedora:45, p-cpe:/a:fedoraproject:fedora:buildstream

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/23/2026

Vulnerability Publication Date: 9/23/2026

Reference Information

CVE: CVE-2026-82331