Linux Distros Unpatched Vulnerability : CVE-2026-87876

low Nessus Plugin ID 344342

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.

- Two case-insensitive comparisons on request-derived usernames outside the main authorization path in CUPS's scheduler (printer ACL validation and private-attribute filtering) could allow bypass of username- based access controls in certain configurations. (CVE-2026-87876)

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: Low

ID: 344342

File Name: unpatched_CVE_2026_87876.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 9/9/2026

Updated: 9/9/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

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-2026-87876

CVSS v3

Risk Factor: Low

Base Score: 3

Temporal Score: 2.8

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

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:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:cups-client, p-cpe:/a:centos:centos:cups-devel, p-cpe:/a:centos:centos:cups-filesystem, p-cpe:/a:centos:centos:cups-ipptool, p-cpe:/a:centos:centos:cups-libs, p-cpe:/a:centos:centos:cups-lpd, p-cpe:/a:centos:centos:cups-php, p-cpe:/a:centos:centos:cups-printerapp, p-cpe:/a:centos:centos:cups, p-cpe:/a:redhat:enterprise_linux:cups-client, p-cpe:/a:redhat:enterprise_linux:cups-devel, p-cpe:/a:redhat:enterprise_linux:cups-filesystem, p-cpe:/a:redhat:enterprise_linux:cups-ipptool, p-cpe:/a:redhat:enterprise_linux:cups-libs, p-cpe:/a:redhat:enterprise_linux:cups-lpd, p-cpe:/a:redhat:enterprise_linux:cups-php, p-cpe:/a:redhat:enterprise_linux:cups-printerapp, p-cpe:/a:redhat:enterprise_linux:cups

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: 9/9/2026

Reference Information

CVE: CVE-2026-87876

Detections

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