RHEL 9 : jackson-core, jackson-databind, jackson-jaxrs-providers, and jackson-modules-base (RHSA-2026:89734)

high Nessus Plugin ID 372019

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Synopsis

The remote Red Hat host is missing one or more security updates for jackson-core / jackson-databind / jackson-jaxrs- providers / jackson-modules-base.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:89734 advisory.

Core part of Jackson that defines Streaming API as well as basic shared abstractions.

Security Fix(es):

* com.fasterxml.jackson.core/jackson-databind: tools.jackson.core/jackson-databind: jackson-databind: CPU Denial of Service via unbounded numeric parsing (CVE-2026-68497)

* com.fasterxml.jackson.core/jackson-databind: tools.jackson.core:jackson-databind: Jackson-databind:
Denial of Service via quadratic forward-reference completion (CVE-2026-91777)

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.

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 jackson-core / jackson-databind / jackson-jaxrs-providers / jackson-modules-base packages based on the guidance in RHSA-2026:89734.

Plugin Details

Severity: High

ID: 372019

File Name: redhat-RHSA-2026-89734.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 10/26/2026

Updated: 10/26/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.63

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-91777

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:rhel_eus:9.6, p-cpe:/a:redhat:enterprise_linux:jackson-core, p-cpe:/a:redhat:enterprise_linux:jackson-databind, p-cpe:/a:redhat:enterprise_linux:jackson-jaxrs-providers, p-cpe:/a:redhat:enterprise_linux:jackson-modules-base, p-cpe:/a:redhat:enterprise_linux:pki-jackson-core, p-cpe:/a:redhat:enterprise_linux:pki-jackson-databind, p-cpe:/a:redhat:enterprise_linux:pki-jackson-jaxrs-json-provider, p-cpe:/a:redhat:enterprise_linux:pki-jackson-jaxrs-providers, p-cpe:/a:redhat:enterprise_linux:pki-jackson-module-jaxb-annotations

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: 10/26/2026

Vulnerability Publication Date: 8/23/2026

Reference Information

CVE: CVE-2026-68497, CVE-2026-91777

CWE: 400, 606

RHSA: 2026:89734

Detections

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