Linux Distros Unpatched Vulnerability : CVE-2026-17615

high Nessus Plugin ID 341763

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 RESTEasy's SourceProvider. This vulnerability allows an unauthenticated attacker to perform an unauthenticated remote file read. By sending a specially crafted XML body with a DOCTYPE declaration referencing external entities to an endpoint that accepts application/xml and returns Source or StreamSource, the server can be tricked into resolving the entity and including sensitive file contents in the HTTP response. This is due to the SourceProvider.writeTo() method creating a SAXParser without disabling external entity resolution, leading to an XML External Entity (XXE) vulnerability.
(CVE-2026-17615)

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: High

ID: 341763

File Name: unpatched_CVE_2026_17615.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 8/31/2026

Updated: 8/31/2026

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

VPR

Risk Factor: Low

Score: 3

Percentile: 23.61

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.3

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

CVSS Score Source: CVE-2026-17615

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.9

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

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

Vulnerability Information

CPE: cpe:/o:centos:centos:8, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:pki-resteasy-client, p-cpe:/a:centos:centos:pki-resteasy-core, p-cpe:/a:centos:centos:pki-resteasy-jackson2-provider, p-cpe:/a:centos:centos:pki-resteasy-servlet-initializer, p-cpe:/a:centos:centos:pki-resteasy, p-cpe:/a:centos:centos:resteasy-javadoc, p-cpe:/a:centos:centos:resteasy, p-cpe:/a:redhat:enterprise_linux:pki-resteasy-client, p-cpe:/a:redhat:enterprise_linux:pki-resteasy-core, p-cpe:/a:redhat:enterprise_linux:pki-resteasy-jackson2-provider, p-cpe:/a:redhat:enterprise_linux:pki-resteasy-servlet-initializer, p-cpe:/a:redhat:enterprise_linux:pki-resteasy, p-cpe:/a:redhat:enterprise_linux:resteasy-javadoc, p-cpe:/a:redhat:enterprise_linux:resteasy

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: 8/31/2026

Reference Information

CVE: CVE-2026-17615

Detections

Analytics