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AlmaLinux 8 : osbuild-composer (ALSA-2026:66016)

high Nessus Plugin ID 344515

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Synopsis

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

Description

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:66016 advisory.

 * golang-fips: Golang FIPS zeroed buffer (CVE-2024-9355)
 * golang: net/[http:](http:) net/[http:](http:) sensitive headers incorrectly sent after cross-domain redirect (CVE-2024-45336)
 * net/mail: golang: Go net/mail: Denial of Service via crafted email inputs (CVE-2026-39820)
 * golang.org/x/net/idna: golang: net/[http:](http:) golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821)
 * encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (CVE-2026-33818)
 * net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution (CVE-2026-56860)
 * net/[http:](http:) golang: Go net/[http:](http:) Unencrypted HTTP/2 connections vulnerable to Denial of Service (CVE-2026-56853)
 * html/template: golang: Go html/template: Cross-Site Scripting via pathological input (CVE-2026-56858)
 * crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862)
 * encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue (CVE-2026-56859)

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 osbuild-composer, osbuild-composer-core and / or osbuild-composer-worker packages.

See Also

https://access.redhat.com/errata/RHSA-2026:66016

https://errata.almalinux.org/8/ALSA-2026-66016.html

Plugin Details

Severity: High

ID: 344515

File Name: alma_linux_ALSA-2026-66016.nasl

Version: 1.1

Type: Local

Published: 9/10/2026

Updated: 9/10/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.8

Percentile: 57.83

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-39820

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:N/I:N/A:H

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

CVSS v4

Risk Factor: High

Base Score: 7.6

Threat Score: 5

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2024-9355

Vulnerability Information

CPE: cpe:/o:alma:linux:8, cpe:/o:alma:linux:8::appstream, cpe:/o:alma:linux:8::baseos, cpe:/o:alma:linux:8::highavailability, cpe:/o:alma:linux:8::nfv, cpe:/o:alma:linux:8::powertools, cpe:/o:alma:linux:8::realtime, cpe:/o:alma:linux:8::resilientstorage, cpe:/o:alma:linux:8::sap, cpe:/o:alma:linux:8::sap_hana, cpe:/o:alma:linux:8::supplementary, p-cpe:/a:alma:linux:osbuild-composer-core, p-cpe:/a:alma:linux:osbuild-composer-worker, p-cpe:/a:alma:linux:osbuild-composer

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: 9/9/2026

Vulnerability Publication Date: 10/1/2024

Reference Information

CVE: CVE-2024-45336, CVE-2024-9355, CVE-2026-33818, CVE-2026-39820, CVE-2026-39821, CVE-2026-56853, CVE-2026-56858, CVE-2026-56859, CVE-2026-56860, CVE-2026-56862

CWE: 1050, 1289, 200, 457, 606, 770, 776, 79

IAVB: 2025-B-0010-S, 2026-B-0120, 2026-B-0234

RHSA: 2026:66016