Linux Distros Unpatched Vulnerability : CVE-2026-78367

high Nessus Plugin ID 339157

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- A vulnerability was found in RPM's rpmbuild tarball processing. When processing a crafted source archive, the getTarSpec() function in tools/rpmbuild.cc passes an attacker-controlled tar archive member name to rpmExpand() as part of a %{basename:...} macro expression. A specially crafted .spec member name can therefore inject RPM macros, including Lua expressions, resulting in arbitrary code execution with the privileges of the user running rpmbuild. This can be exploited when a victim or automated build system processes an attacker-controlled source tarball using rpmbuild tarball mode (such as -ts, -ta, or -tb).
(CVE-2026-78367)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: High

ID: 339157

File Name: unpatched_CVE_2026_78367.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 8/24/2026

Updated: 8/25/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.2

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.4

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

CVSS Score Source: CVE-2026-78367

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: cpe:/o:centos:centos:7, cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:11.0, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:debian:debian_linux:14.0, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:python3-rpm, p-cpe:/a:centos:centos:rpm-apidocs, p-cpe:/a:centos:centos:rpm-build-libs, p-cpe:/a:centos:centos:rpm-build, p-cpe:/a:centos:centos:rpm-cron, p-cpe:/a:centos:centos:rpm-devel, p-cpe:/a:centos:centos:rpm-libs, p-cpe:/a:centos:centos:rpm-plugin-audit, p-cpe:/a:centos:centos:rpm-plugin-dbus-announce, p-cpe:/a:centos:centos:rpm-plugin-fapolicyd, p-cpe:/a:centos:centos:rpm-plugin-ima, p-cpe:/a:centos:centos:rpm-plugin-prioreset, p-cpe:/a:centos:centos:rpm-plugin-selinux, p-cpe:/a:centos:centos:rpm-plugin-syslog, p-cpe:/a:centos:centos:rpm-plugin-systemd-inhibit, p-cpe:/a:centos:centos:rpm-python, p-cpe:/a:centos:centos:rpm-sign-libs, p-cpe:/a:centos:centos:rpm-sign, p-cpe:/a:centos:centos:rpm, p-cpe:/a:debian:debian_linux:rpm, p-cpe:/a:redhat:enterprise_linux:python3-rpm, p-cpe:/a:redhat:enterprise_linux:rpm-apidocs, p-cpe:/a:redhat:enterprise_linux:rpm-build-libs, p-cpe:/a:redhat:enterprise_linux:rpm-build, p-cpe:/a:redhat:enterprise_linux:rpm-cron, p-cpe:/a:redhat:enterprise_linux:rpm-devel, p-cpe:/a:redhat:enterprise_linux:rpm-libs, p-cpe:/a:redhat:enterprise_linux:rpm-plugin-audit, p-cpe:/a:redhat:enterprise_linux:rpm-plugin-dbus-announce, p-cpe:/a:redhat:enterprise_linux:rpm-plugin-fapolicyd, p-cpe:/a:redhat:enterprise_linux:rpm-plugin-ima, p-cpe:/a:redhat:enterprise_linux:rpm-plugin-prioreset, p-cpe:/a:redhat:enterprise_linux:rpm-plugin-selinux, p-cpe:/a:redhat:enterprise_linux:rpm-plugin-syslog, p-cpe:/a:redhat:enterprise_linux:rpm-plugin-systemd-inhibit, p-cpe:/a:redhat:enterprise_linux:rpm-python, p-cpe:/a:redhat:enterprise_linux:rpm-sign-libs, p-cpe:/a:redhat:enterprise_linux:rpm-sign, p-cpe:/a:redhat:enterprise_linux:rpm

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 8/24/2026

Reference Information

CVE: CVE-2026-78367

Detections

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