RHEL 9 : rpm (RHSA-2026:99593)

high Nessus Plugin ID 379764

Synopsis

The remote Red Hat host is missing one or more security updates for rpm.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:99593 advisory.

The RPM Package Manager (RPM) is a command-line driven package management system capable of installing, uninstalling, verifying, querying, and updating software packages.

Security Fix(es):

* rpm: Command Injection in `rpmbuild -t*` (`getTarSpec`) via Unescaped Tarball Path (CVE-2026-84837)

* rpm: rpmbuild getTarSpec() crafted tar member name ? macro injection (CVE-2026-78367)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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 RHEL rpm package based on the guidance in RHSA-2026:99593.

Plugin Details

Severity: High

ID: 379764

File Name: redhat-RHSA-2026-99593.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/12/2026

Updated: 11/12/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.52

Vendor

Vendor Severity: Moderate

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-2026-84837

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

CPE: cpe:/o:redhat:enterprise_linux:9, 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-fapolicyd, p-cpe:/a:redhat:enterprise_linux:rpm-plugin-ima, 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-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/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 11/12/2026

Vulnerability Publication Date: 8/24/2026

Reference Information

CVE: CVE-2026-78367, CVE-2026-84837

CWE: 78, 94

RHSA: 2026:99593

Detections

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