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AlmaLinux 9 : firefox (ALSA-2026:20574)

high Nessus Plugin ID 316890

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Synopsis

The remote AlmaLinux host is missing one or more security updates.

Description

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:20574 advisory.

 * firefox: Other issue in the WebRTC component (CVE-2026-8094)
 * firefox: Memory safety bugs fixed in Firefox ESR 115.35.2, Firefox ESR 140.10.2 and Firefox 150.0.2 (CVE-2026-8092)
 * firefox: Use-after-free in the DOM: Networking component (CVE-2026-8090)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 firefox and / or firefox-x11 packages.

See Also

https://access.redhat.com/errata/RHSA-2026:20574

https://errata.almalinux.org/9/ALSA-2026-20574.html

Plugin Details

Severity: High

ID: 316890

File Name: alma_linux_ALSA-2026-20574.nasl

Version: 1.2

Type: Local

Published: 5/27/2026

Updated: 10/16/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.03

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-2026-8094

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:alma:linux:9, cpe:/o:alma:linux:9::appstream, cpe:/o:alma:linux:9::baseos, cpe:/o:alma:linux:9::crb, cpe:/o:alma:linux:9::highavailability, cpe:/o:alma:linux:9::nfv, cpe:/o:alma:linux:9::realtime, cpe:/o:alma:linux:9::resilientstorage, cpe:/o:alma:linux:9::sap, cpe:/o:alma:linux:9::sap_hana, cpe:/o:alma:linux:9::supplementary, p-cpe:/a:alma:linux:firefox-x11, p-cpe:/a:alma:linux:firefox

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 5/26/2026

Vulnerability Publication Date: 4/30/2026

Reference Information

CVE: CVE-2026-8090, CVE-2026-8092, CVE-2026-8094

CWE: 787, 825

RHSA: 2026:20574