Detections
Analytics

RHEL 9 : Red Hat OpenStack Services on OpenShift 18.0 (erlang) (RHSA-2026:39809)

high Nessus Plugin ID 326996

Synopsis

The remote Red Hat host is missing one or more security updates for Red Hat OpenStack Services on OpenShift 18.0 (erlang).

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:39809 advisory.

 Erlang is a general-purpose programming language and runtime environment.
 Erlang has built-in support for concurrency, distribution and fault tolerance. Erlang is used in several large telecommunication systems from Ericsson.

 Security Fix(es):

 * Erlang OTP public_key: Certificate chain forgery via improper trust chain validation (CVE-2026-42789)

 * Erlang OTP public_key: Certificate validation bypass allows hostname spoofing (CVE-2026-42790)

 For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 RHEL Red Hat OpenStack Services on OpenShift 18.0 (erlang) package based on the guidance in RHSA-2026:39809.

See Also

https://access.redhat.com/errata/RHSA-2026:39809

https://access.redhat.com/security/updates/classification/#important

https://bugzilla.redhat.com/show_bug.cgi?id=2482093

https://bugzilla.redhat.com/show_bug.cgi?id=2482286

http://www.nessus.org/u?b8089919

Plugin Details

Severity: High

ID: 326996

File Name: redhat-RHSA-2026-39809.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/15/2026

Updated: 7/15/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.61

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-42790

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:erlang-asn1, p-cpe:/a:redhat:enterprise_linux:erlang-sasl, p-cpe:/a:redhat:enterprise_linux:erlang-public_key, p-cpe:/a:redhat:enterprise_linux:erlang-mnesia, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:erlang-eldap, p-cpe:/a:redhat:enterprise_linux:erlang-kernel, p-cpe:/a:redhat:enterprise_linux:erlang-stdlib, p-cpe:/a:redhat:enterprise_linux:erlang-runtime_tools, p-cpe:/a:redhat:enterprise_linux:erlang-compiler, p-cpe:/a:redhat:enterprise_linux:erlang-crypto, p-cpe:/a:redhat:enterprise_linux:erlang-tools, p-cpe:/a:redhat:enterprise_linux:erlang-syntax_tools, p-cpe:/a:redhat:enterprise_linux:erlang-xmerl, p-cpe:/a:redhat:enterprise_linux:erlang-inets, p-cpe:/a:redhat:enterprise_linux:erlang, p-cpe:/a:redhat:enterprise_linux:erlang-erts, p-cpe:/a:redhat:enterprise_linux:erlang-os_mon, p-cpe:/a:redhat:enterprise_linux:erlang-snmp, p-cpe:/a:redhat:enterprise_linux:erlang-parsetools, p-cpe:/a:redhat:enterprise_linux:erlang-ssl

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/15/2026

Vulnerability Publication Date: 5/27/2026

Reference Information

CVE: CVE-2026-42789, CVE-2026-42790

CWE: 295

RHSA: 2026:39809