Linux Distros Unpatched Vulnerability : CVE-2026-18369

medium Nessus Plugin ID 330901

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- A flaw was found in Dogtag PKI's ACME responder where the HTTP-01 challenge validator accepts IP address literals as dns identifiers and follows HTTP redirects without validating that the target is a public address. An unauthenticated ACME account holder can exploit this to perform server-side request forgery (SSRF), making the Dogtag server send HTTP GET requests to internal network services. With the InMemory database backend, the response body of internal targets is disclosed to the attacker through the ACME challenge error. (CVE-2026-18369)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: Medium

ID: 330901

File Name: unpatched_CVE_2026_18369.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 7/30/2026

Updated: 7/30/2026

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

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5.4

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

CVSS Score Source: CVE-2026-18369

CVSS v3

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: cpe:/o:centos:centos:7, cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:11.0, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:dogtag-pki, p-cpe:/a:centos:centos:idm-jss-javadoc, p-cpe:/a:centos:centos:idm-jss, p-cpe:/a:centos:centos:idm-ldapjdk-javadoc, p-cpe:/a:centos:centos:idm-ldapjdk, p-cpe:/a:centos:centos:idm-pki-acme, p-cpe:/a:centos:centos:idm-pki-base-java, p-cpe:/a:centos:centos:idm-pki-base, p-cpe:/a:centos:centos:idm-pki-ca, p-cpe:/a:centos:centos:idm-pki-est, p-cpe:/a:centos:centos:idm-pki-java, p-cpe:/a:centos:centos:idm-pki-kra, p-cpe:/a:centos:centos:idm-pki-server, p-cpe:/a:centos:centos:idm-pki-symkey, p-cpe:/a:centos:centos:idm-pki-tools, p-cpe:/a:centos:centos:idm-tomcatjss, p-cpe:/a:centos:centos:jss-javadoc, p-cpe:/a:centos:centos:jss, p-cpe:/a:centos:centos:ldapjdk-javadoc, p-cpe:/a:centos:centos:ldapjdk, p-cpe:/a:centos:centos:pki-acme, p-cpe:/a:centos:centos:pki-base-java, p-cpe:/a:centos:centos:pki-base, p-cpe:/a:centos:centos:pki-ca, p-cpe:/a:centos:centos:pki-common-javadoc, p-cpe:/a:centos:centos:pki-common, p-cpe:/a:centos:centos:pki-core, p-cpe:/a:centos:centos:pki-java-tools-javadoc, p-cpe:/a:centos:centos:pki-java-tools, p-cpe:/a:centos:centos:pki-javadoc, p-cpe:/a:centos:centos:pki-kra, p-cpe:/a:centos:centos:pki-native-tools, p-cpe:/a:centos:centos:pki-selinux, p-cpe:/a:centos:centos:pki-server, p-cpe:/a:centos:centos:pki-setup, p-cpe:/a:centos:centos:pki-silent, p-cpe:/a:centos:centos:pki-symkey, p-cpe:/a:centos:centos:pki-tools, p-cpe:/a:centos:centos:pki-util-javadoc, p-cpe:/a:centos:centos:pki-util, p-cpe:/a:centos:centos:python3-idm-pki, p-cpe:/a:centos:centos:python3-pki, p-cpe:/a:centos:centos:resteasy-javadoc, p-cpe:/a:centos:centos:resteasy, p-cpe:/a:centos:centos:tomcatjss, p-cpe:/a:debian:debian_linux:dogtag-pki, p-cpe:/a:redhat:enterprise_linux:dogtag-pki, p-cpe:/a:redhat:enterprise_linux:idm-jss-javadoc, p-cpe:/a:redhat:enterprise_linux:idm-jss, p-cpe:/a:redhat:enterprise_linux:idm-ldapjdk-javadoc, p-cpe:/a:redhat:enterprise_linux:idm-ldapjdk, p-cpe:/a:redhat:enterprise_linux:idm-pki-acme, p-cpe:/a:redhat:enterprise_linux:idm-pki-base-java, p-cpe:/a:redhat:enterprise_linux:idm-pki-base, p-cpe:/a:redhat:enterprise_linux:idm-pki-ca, p-cpe:/a:redhat:enterprise_linux:idm-pki-est, p-cpe:/a:redhat:enterprise_linux:idm-pki-java, p-cpe:/a:redhat:enterprise_linux:idm-pki-kra, p-cpe:/a:redhat:enterprise_linux:idm-pki-server, p-cpe:/a:redhat:enterprise_linux:idm-pki-symkey, p-cpe:/a:redhat:enterprise_linux:idm-pki-tools, p-cpe:/a:redhat:enterprise_linux:idm-tomcatjss, p-cpe:/a:redhat:enterprise_linux:jss-javadoc, p-cpe:/a:redhat:enterprise_linux:jss, p-cpe:/a:redhat:enterprise_linux:ldapjdk-javadoc, p-cpe:/a:redhat:enterprise_linux:ldapjdk, p-cpe:/a:redhat:enterprise_linux:pki-acme, p-cpe:/a:redhat:enterprise_linux:pki-base-java, p-cpe:/a:redhat:enterprise_linux:pki-base, p-cpe:/a:redhat:enterprise_linux:pki-ca, p-cpe:/a:redhat:enterprise_linux:pki-common-javadoc, p-cpe:/a:redhat:enterprise_linux:pki-common, p-cpe:/a:redhat:enterprise_linux:pki-core, p-cpe:/a:redhat:enterprise_linux:pki-java-tools-javadoc, p-cpe:/a:redhat:enterprise_linux:pki-java-tools, p-cpe:/a:redhat:enterprise_linux:pki-javadoc, p-cpe:/a:redhat:enterprise_linux:pki-kra, p-cpe:/a:redhat:enterprise_linux:pki-native-tools, p-cpe:/a:redhat:enterprise_linux:pki-selinux, p-cpe:/a:redhat:enterprise_linux:pki-server, p-cpe:/a:redhat:enterprise_linux:pki-setup, p-cpe:/a:redhat:enterprise_linux:pki-silent, p-cpe:/a:redhat:enterprise_linux:pki-symkey, p-cpe:/a:redhat:enterprise_linux:pki-tools, p-cpe:/a:redhat:enterprise_linux:pki-util-javadoc, p-cpe:/a:redhat:enterprise_linux:pki-util, p-cpe:/a:redhat:enterprise_linux:python3-idm-pki, p-cpe:/a:redhat:enterprise_linux:python3-pki, p-cpe:/a:redhat:enterprise_linux:resteasy-javadoc, p-cpe:/a:redhat:enterprise_linux:resteasy, p-cpe:/a:redhat:enterprise_linux:tomcatjss

Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 7/30/2026

Reference Information

CVE: CVE-2026-18369

Detections

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