RHEL 10 / 9 : Red Hat Ansible Automation Platform 2.6 Product Security and Bug Fix Update (Important) (RHSA-2026:50336)

high Nessus Plugin ID 331965

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 10 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:50336 advisory.

Red Hat Ansible Automation Platform provides an enterprise framework for building, deploying and managing IT automation at scale. IT Managers can provide top-down guidelines on how automation is applied to individual teams, while automation developers retain the freedom to write tasks that leverage existing knowledge without the overhead. Ansible Automation Platform makes it possible for users across an organization to share, vet, and manage automation content by means of a simple, powerful, and agentless language.

Security Fix(es):

* automation-controller: PyJWT: Authentication bypass due to forged JSON Web Tokens (CVE-2026-48526)
* automation-eda-controller: ExternalEventStreamViewSet trusts Subject header without validation and leaks expected DN (CVE-2026-12383)
* automation-eda-controller: Authentication bypass in Event-Driven Ansible via forged HTTP header (CVE-2026-18141)
* automation-gateway-proxy: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811)
* python3.12-aiohttp: Arbitrary code execution via untrusted input to CookieJar.load() (CVE-2026-34993)
* python3.12-daphne: daphne: Denial of Service via excessive WebSocket message size (CVE-2026-44545)
* python3.12-pillow: Denial of Service via crafted GD 2.x image file (CVE-2026-55380)
* python3.12-pillow: Denial of Service via crafted BDF font file (CVE-2026-55379)
* python3.12-pillow: Denial of Service via excessive memory allocation when processing font files (CVE-2026-54060)
* python3.12-pillow: Denial of Service via crafted PCF font data (CVE-2026-54059)
* python3.12-pillow: Native heap out-of-bounds write (CVE-2026-59197)
* python3.12-pyasn1: Denial of Service via crafted ASN.1 REAL values (CVE-2026-59886)
* python3.12-pyasn1: Denial of Service via crafted ASN.1 OBJECT IDENTIFIER (CVE-2026-59885)
* receptor: quic-go: Denial of Service via excessive memory allocation in HTTP/3 trailers (CVE-2026-40898)

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

For details about this release, refer to the release notes 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 affected packages.

Plugin Details

Severity: High

ID: 331965

File Name: redhat-RHSA-2026-50336.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 8/4/2026

Updated: 8/4/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.94

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-34993

CVSS v3

Risk Factor: High

Base Score: 7.3

Temporal Score: 6.6

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:automation-controller-cli, p-cpe:/a:redhat:enterprise_linux:automation-controller-server, p-cpe:/a:redhat:enterprise_linux:automation-controller-ui, p-cpe:/a:redhat:enterprise_linux:automation-controller-venv-tower, p-cpe:/a:redhat:enterprise_linux:automation-controller, p-cpe:/a:redhat:enterprise_linux:automation-eda-controller-base-services, p-cpe:/a:redhat:enterprise_linux:automation-eda-controller-base, p-cpe:/a:redhat:enterprise_linux:automation-eda-controller-event-stream-services, p-cpe:/a:redhat:enterprise_linux:automation-eda-controller-worker-services, p-cpe:/a:redhat:enterprise_linux:automation-eda-controller, p-cpe:/a:redhat:enterprise_linux:automation-gateway-proxy-server, p-cpe:/a:redhat:enterprise_linux:automation-gateway-proxy, p-cpe:/a:redhat:enterprise_linux:python3.12-aiohttp, p-cpe:/a:redhat:enterprise_linux:python3.12-daphne, p-cpe:/a:redhat:enterprise_linux:python3.12-pillow, p-cpe:/a:redhat:enterprise_linux:python3.12-pyasn1, p-cpe:/a:redhat:enterprise_linux:receptor, p-cpe:/a:redhat:enterprise_linux:receptorctl

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/4/2026

Vulnerability Publication Date: 5/7/2026

Reference Information

CVE: CVE-2026-12383, CVE-2026-18141, CVE-2026-33811, CVE-2026-34993, CVE-2026-40898, CVE-2026-44545, CVE-2026-48526, CVE-2026-54059, CVE-2026-54060, CVE-2026-55379, CVE-2026-55380, CVE-2026-59197, CVE-2026-59885, CVE-2026-59886

CWE: 1050, 1285, 1341, 295, 345, 347, 409, 502, 770, 787

IAVA: 2026-A-0666

RHSA: 2026:50336

Detections

Analytics