Detections
Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-78376

high Nessus Plugin ID 339187

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 found in WebKitGTK. Processing malicious web content can cause a use-after-free issue due to improper memory handling and result in memory corruption. (CVE-2026-78376)

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-2026-78376

Plugin Details

Severity: High

ID: 339187

File Name: unpatched_CVE_2026_78376.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 8/25/2026

Updated: 8/25/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.2

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-2026-78376

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.1

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

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:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:libwebkit2gtk, p-cpe:/a:centos:centos:webkit2gtk3-devel, p-cpe:/a:centos:centos:webkit2gtk3-jsc-devel, p-cpe:/a:centos:centos:webkit2gtk3-jsc, p-cpe:/a:centos:centos:webkit2gtk3-plugin-process-gtk2, p-cpe:/a:centos:centos:webkit2gtk3, p-cpe:/a:centos:centos:webkitgtk3-devel, p-cpe:/a:centos:centos:webkitgtk3-doc, p-cpe:/a:centos:centos:webkitgtk3, p-cpe:/a:centos:centos:webkitgtk4-devel, p-cpe:/a:centos:centos:webkitgtk4-doc, p-cpe:/a:centos:centos:webkitgtk4-jsc-devel, p-cpe:/a:centos:centos:webkitgtk4-jsc, p-cpe:/a:centos:centos:webkitgtk4-plugin-process-gtk2, p-cpe:/a:centos:centos:webkitgtk4, p-cpe:/a:redhat:enterprise_linux:libwebkit2gtk, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-devel, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-jsc-devel, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-jsc, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-plugin-process-gtk2, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3, p-cpe:/a:redhat:enterprise_linux:webkitgtk3-devel, p-cpe:/a:redhat:enterprise_linux:webkitgtk3-doc, p-cpe:/a:redhat:enterprise_linux:webkitgtk3, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-devel, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-doc, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-jsc-devel, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-jsc, p-cpe:/a:redhat:enterprise_linux:webkitgtk4-plugin-process-gtk2, p-cpe:/a:redhat:enterprise_linux:webkitgtk4

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

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 8/24/2026

Reference Information

CVE: CVE-2026-78376