Detections
Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-0989

low Nessus Plugin ID 286280

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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 flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled. The parser does not enforce a limit on inclusion depth when resolving nested <include> directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This may lead to stack exhaustion and application crashes, creating a denial-of-service risk. (CVE-2026-0989)

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://access.redhat.com/security/cve/cve-2026-0989

Plugin Details

Severity: Low

ID: 286280

File Name: unpatched_CVE_2026_0989.nasl

Version: 1.8

Type: Local

Agent: unix

Family: Misc.

Published: 1/15/2026

Updated: 7/13/2026

Supported Sensors: Agentless 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: Low

Score: 1.2

Percentile: 0.01

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.8

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

CVSS Score Source: CVE-2026-0989

CVSS v3

Risk Factor: Low

Base Score: 3.7

Temporal Score: 3.5

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

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

Vulnerability Information

CPE: cpe:/o:centos:centos:7, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:centos:centos:libxml2, p-cpe:/a:centos:centos:libxml2-devel, p-cpe:/a:centos:centos:libxml2-python, p-cpe:/a:centos:centos:libxml2-static, p-cpe:/a:redhat:enterprise_linux:libxml2, p-cpe:/a:redhat:enterprise_linux:libxml2-devel, p-cpe:/a:redhat:enterprise_linux:libxml2-python, p-cpe:/a:redhat:enterprise_linux:libxml2-static, p-cpe:/a:redhat:enterprise_linux:python3-libxml2, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:python3-libxml2, cpe:/o:redhat:enterprise_linux:9, cpe:/o:redhat:enterprise_linux:10

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: 1/15/2026

Reference Information

CVE: CVE-2026-0989