Detections
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AlmaLinux 10 : ruby4.0 (ALSA-2026:33540)

high Nessus Plugin ID 324576

Synopsis

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

Description

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:33540 advisory.

 * ruby: net-imap: Net::IMAP: Denial of Service via crafted IMAP responses (CVE-2026-42245)
 * ruby/net-imap: ruby: Net::IMAP: IMAP Command Injection via Symbol Arguments (CVE-2026-42258)
 * net-imap: ruby: Net::IMAP: Information disclosure via man-in-the-middle attack bypassing TLS (CVE-2026-42246)

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 packages.

See Also

https://access.redhat.com/errata/RHSA-2026:33540

https://errata.almalinux.org/10/ALSA-2026-33540.html

Plugin Details

Severity: High

ID: 324576

File Name: alma_linux_ALSA-2026-33540.nasl

Version: 1.1

Type: Local

Published: 7/1/2026

Updated: 7/1/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.64

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-42246

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

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

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

CVSS v4

Risk Factor: High

Base Score: 7.6

Threat Score: 4.9

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: cpe:/o:alma:linux:10::appstream, p-cpe:/a:alma:linux:ruby4.0-devel, cpe:/o:alma:linux:10::sap_hana, p-cpe:/a:alma:linux:ruby4.0-rubygem-mysql2, cpe:/o:alma:linux:10, p-cpe:/a:alma:linux:ruby4.0-doc, cpe:/o:alma:linux:10::nfv, cpe:/o:alma:linux:10::baseos, cpe:/o:alma:linux:10::supplementary, cpe:/o:alma:linux:10::sap, cpe:/o:alma:linux:10::resilientstorage, p-cpe:/a:alma:linux:ruby4.0, cpe:/o:alma:linux:10::powertools, cpe:/o:alma:linux:10::highavailability, p-cpe:/a:alma:linux:ruby4.0-rubygem-pg, cpe:/o:alma:linux:10::realtime

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/30/2026

Vulnerability Publication Date: 5/4/2026

Reference Information

CVE: CVE-2026-42245, CVE-2026-42246, CVE-2026-42258

CWE: 325, 606, 93

RHSA: 2026:33540