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Linux Distros Unpatched Vulnerability : CVE-2026-91148

critical Nessus Plugin ID 362697

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.

 - Automatic update for cockpit-368-1.fc45. ##### **Changelog for cockpit** ``` * Wed Sep 23 2026 Packit <[email protected]> - 368-1 - Limit concurrent connections CVE-2026-91149 - Harden cockpit-ws against trailing slash CVE-2026-91147 - Sanitize URLs from PackageKit CVE-2026-91148 - Interactive file chooser for SSH keys - Bug fixes and translation updates - Resolves RHEL-263070, RHEL-262891, RHEL-253609 for rhel-10.4 - Resolves RHEL-263066 for rhel-9.10 ``` (CVE-2026-91148)

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

Solution

There is no known solution at this time.

See Also

https://security-tracker.debian.org/tracker/CVE-2026-91148

https://ubuntu.com/security/CVE-2026-91148

Plugin Details

Severity: Critical

ID: 362697

File Name: unpatched_CVE_2026_91148.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.29

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-2026-91148

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9

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:U/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:canonical:ubuntu_linux:cockpit, p-cpe:/a:debian:debian_linux:cockpit

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

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 9/23/2026

Reference Information

CVE: CVE-2026-91148