Amazon Linux 2023 : firefox (ALAS2023-2026-1706)

high Nessus Plugin ID 315017

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Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1706 advisory.

libexpat before 2.7.6 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document. (CVE-2026-41080)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Run 'dnf update firefox --releasever 2023.11.20260514' or or 'dnf update --advisory ALAS2023-2026-1706 --releasever 2023.11.20260514' to update your system.

Plugin Details

Severity: High

ID: 315017

File Name: al2023_ALAS2023-2026-1706.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 5/16/2026

Updated: 5/16/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 1.2

Temporal Score: 0.9

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

CVSS Score Source: CVE-2026-41080

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:firefox, p-cpe:/a:amazon:linux:firefox-debugsource, cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:firefox-debuginfo

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/15/2026

Vulnerability Publication Date: 4/16/2026

Reference Information

CVE: CVE-2026-41080

Detections

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