Detections
Analytics
Amazon Linux 2023 : brotli, brotli-devel, libbrotli (ALAS2023-2026-3334)
critical Nessus Plugin ID 371897
Language:
Synopsis
The remote Amazon Linux 2023 host is missing a security update.Description
It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-3334 advisory.A vulnerability in the Node.js Brotli decoder can result in an out-of-bounds memory write when processing crafted Brotli input. Successful exploitation may lead to memory corruption and remote code execution.
(CVE-2026-111497)
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 brotli --releasever 2023.12.20261026' or or 'dnf update --advisory ALAS2023-2026-3334 --releasever 2023.12.20261026' to update your system.See Also
https://alas.aws.amazon.com//AL2023/ALAS2023-2026-3334.html
Plugin Details
Severity: Critical
ID: 371897
File Name: al2023_ALAS2023-2026-3334.nasl
Version: 1.4
Type: Local
Agent: unix
Published: 10/25/2026
Updated: 10/30/2026
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.4
Percentile: 99.83
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 8.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-111497
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 9.4
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C
CVSS v4
Risk Factor: Critical
Base Score: 9.2
Threat Score: 9.2
Threat Vector: CVSS:4.0/E:A
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Vulnerability Information
CPE: cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:brotli-debuginfo, p-cpe:/a:amazon:linux:brotli-debugsource, p-cpe:/a:amazon:linux:brotli-devel, p-cpe:/a:amazon:linux:brotli, p-cpe:/a:amazon:linux:libbrotli-debuginfo, p-cpe:/a:amazon:linux:libbrotli, p-cpe:/a:amazon:linux:python3-brotli-debuginfo, p-cpe:/a:amazon:linux:python3-brotli
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 10/24/2026
Vulnerability Publication Date: 10/21/2026
CISA Known Exploited Vulnerability Due Dates: 11/10/2026
Reference Information
CVE: CVE-2026-111497
IAVA: 2026-A-1200, 2026-A-1202