RockyLinux 9 : osbuild-composer (RLSA-2026:65153)

high Nessus Plugin ID 344414

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Synopsis

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

Description

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:65153 advisory.

* net/mail: golang: net/mail: Denial of Service via pathological email address parsing (CVE-2026-42499)

* net/mail: golang: Go net/mail: Denial of Service via crafted email inputs (CVE-2026-39820)

* golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821)

* mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header (CVE-2026-42504)

* 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: golang: Go net/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 RockyLinux 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 packages.

Plugin Details

Severity: High

ID: 344414

File Name: rocky_linux_RLSA-2026-65153.nasl

Version: 1.1

Type: Local

Family: Rocky Linux Local Security Checks

Published: 9/9/2026

Updated: 9/9/2026

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

Vulnerability Information

CPE: cpe:/o:rocky:linux:9, p-cpe:/a:rocky:linux:osbuild-composer-core-debuginfo, p-cpe:/a:rocky:linux:osbuild-composer-core, p-cpe:/a:rocky:linux:osbuild-composer-debuginfo, p-cpe:/a:rocky:linux:osbuild-composer-debugsource, p-cpe:/a:rocky:linux:osbuild-composer-worker-debuginfo, p-cpe:/a:rocky:linux:osbuild-composer-worker, p-cpe:/a:rocky:linux:osbuild-composer

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/9/2026

Vulnerability Publication Date: 5/7/2026

Reference Information

CVE: CVE-2026-33818, CVE-2026-39820, CVE-2026-39821, CVE-2026-42499, CVE-2026-42504, CVE-2026-56853, CVE-2026-56858, CVE-2026-56859, CVE-2026-56860, CVE-2026-56862

IAVB: 2026-B-0120, 2026-B-0146, 2026-B-0234

Detections

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