Detections
Analytics

Oracle Linux 8 : flatpak (ELSA-2026-21756)

critical Nessus Plugin ID 317534

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Synopsis

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

Description

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-21756 advisory.

 [1.12.9-4]
 - Fix arbitrary code execution via crafted symlinks in sandbox-expose options Resolves: RHEL-165633
 - Fix arbitrary file deletion on host via improper cache file path validation Resolves: RHEL-170160

Tenable has extracted the preceding description block directly from the Oracle 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

https://linux.oracle.com/errata/ELSA-2026-21756.html

Plugin Details

Severity: Critical

ID: 317534

File Name: oraclelinux_ELSA-2026-21756.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 5/29/2026

Updated: 5/29/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.1

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-2026-34078

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 8.1

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:flatpak-devel, p-cpe:/a:oracle:linux:flatpak-selinux, p-cpe:/a:oracle:linux:flatpak-libs, p-cpe:/a:oracle:linux:flatpak-session-helper, cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:flatpak

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/28/2026

Vulnerability Publication Date: 4/7/2026

Reference Information

CVE: CVE-2026-34078, CVE-2026-34079

IAVA: 2026-A-0317