Detections
Analytics

Atlassian Jira Service Management Data Center and Server 5.9.x < 10.3.25 / 10.4.x < 11.3.11 (JSDSERVER-16781)

critical Nessus Plugin ID 367867

Synopsis

The remote Atlassian Jira Service Management Data Center and Server (Jira Service Desk) host is missing a security update.

Description

The version of Atlassian Jira Service Management Data Center and Server (Jira Service Desk) running on the remote host is affected by a vulnerability as referenced in the JSDSERVER-16781 advisory.

 - Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Fina and 4.2.17.Final, io.netty.handler.ssl.SslClientHelloHandler#decode checks the wrong offset before reading the four-byte TLS handshake header, so a ClientHello whose handshake header spans records can cause an IndexOutOfBoundsException and invoke select(ctx, null). This selects the default SslContext instead of the SNI-specific context. In deployments where per-SNI clientAuth=REQUIRE is the sole mutual TLS gate, the default SslContext uses clientAuth=NONE or clientAuth=OPTIONAL, and no application-layer certificate verification exists, an unauthenticated remote attacker can bypass the protected route's mutual TLS requirement. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final. (CVE-2026-75595)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Atlassian Jira Service Management Data Center and Server version 10.3.25, 11.3.11 or later.

See Also

https://jira.atlassian.com/browse/JSDSERVER-16781

Plugin Details

Severity: Critical

ID: 367867

File Name: jira_service_desk_JSDSERVER-16781.nasl

Version: 1.1

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 10/20/2026

Updated: 10/20/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.45

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-75595

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.1

Threat Score: 6.9

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/a:atlassian:jira_service_desk

Required KB Items: installed_sw/JIRA Service Desk Application

Exploit Ease: No known exploits are available

Patch Publication Date: 9/9/2026

Vulnerability Publication Date: 8/19/2026

Reference Information

CVE: CVE-2026-75595