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Linux Distros Unpatched Vulnerability : CVE-2026-18047

medium Nessus Plugin ID 330485

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 web.xml security constraints use exact URL pattern matching for admin-only enable/disable endpoints. By appending a trailing slash to the URL, an unauthenticated attacker can bypass the Tomcat authentication constraint while RESTEasy still routes the request to the handler, allowing unauthorized toggling of the ACME service state including persistent denial of service. (CVE-2026-18047)

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

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-18047

https://security-tracker.debian.org/tracker/CVE-2026-18047

Plugin Details

Severity: Medium

ID: 330485

File Name: unpatched_CVE_2026_18047.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 7/29/2026

Updated: 7/29/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.86

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.4

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

CVSS Score Source: CVE-2026-18047

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 6

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

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: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-core, p-cpe:/a:centos:centos:pki-javadoc, p-cpe:/a:centos:centos:pki-kra, p-cpe:/a:centos:centos:pki-server, p-cpe:/a:centos:centos:pki-symkey, p-cpe:/a:centos:centos:pki-tools, 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-core, p-cpe:/a:redhat:enterprise_linux:pki-javadoc, p-cpe:/a:redhat:enterprise_linux:pki-kra, p-cpe:/a:redhat:enterprise_linux:pki-server, p-cpe:/a:redhat:enterprise_linux:pki-symkey, p-cpe:/a:redhat:enterprise_linux:pki-tools, 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: 7/28/2026

Reference Information

CVE: CVE-2026-18047