Detections
Analytics

Amazon Linux 2023 : yq (ALAS2023-2026-1582)

medium Nessus Plugin ID 306237

Synopsis

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

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1582 advisory.

 The html.Parse function in golang.org/x/net/html has quadratic parsing complexity when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
 (CVE-2025-47911)

 The html.Parse function in golang.org/x/net/html has an infinite parsing loop when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
 (CVE-2025-58190)

 url.Parse insufficiently validated the host/authority component and accepted some invalid URLs.
 (CVE-2026-25679)

 On Unix platforms, when listing the contents of a directory using File.ReadDir or File.Readdir the returned FileInfo could reference a file outside of the Root in which the File was opened. The impact of this escape is limited to reading metadata provided by lstat from arbitrary locations on the filesystem without permitting reading or writing files outside the root. (CVE-2026-27139)

 Actions which insert URLs into the content attribute of HTML meta tags are not escaped. This can allow XSS if the meta tag also has an http-equiv attribute with the value refresh. A new GODEBUG setting has been added, htmlmetacontenturlescape, which can be used to disable escaping URLs in actions in the meta content attribute which follow url= by setting htmlmetacontenturlescape=0. (CVE-2026-27142)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'dnf update yq --releasever 2023.11.20260413' or or 'dnf update --advisory ALAS2023-2026-1582 --releasever 2023.11.20260413' to update your system.

See Also

https://alas.aws.amazon.com//AL2023/ALAS2023-2026-1582.html

https://alas.aws.amazon.com/faqs.html

https://explore.alas.aws.amazon.com/CVE-2025-47911.html

https://explore.alas.aws.amazon.com/CVE-2025-58190.html

https://explore.alas.aws.amazon.com/CVE-2026-25679.html

https://explore.alas.aws.amazon.com/CVE-2026-27139.html

https://explore.alas.aws.amazon.com/CVE-2026-27142.html

Plugin Details

Severity: Medium

ID: 306237

File Name: al2023_ALAS2023-2026-1582.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 4/13/2026

Updated: 4/13/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2025-58190

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

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

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

Vulnerability Information

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

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: 4/13/2026

Vulnerability Publication Date: 10/23/2025

Reference Information

CVE: CVE-2025-47911, CVE-2025-58190, CVE-2026-25679, CVE-2026-27139, CVE-2026-27142

IAVB: 2025-B-0177-S, 2026-B-0055-S