Atlassian Confluence 7.17.x / 7.19.x / 8.5.x / 8.9.x / 9.0.1 / 9.1.x / 9.2.x < 9.2.22 / 10.0.2 / 10.1.x / 10.2.x < 10.2.14 (CONFSERVER-104340)

high Nessus Plugin ID 330086

Synopsis

The remote Atlassian Confluence host is missing a security update.

Description

The version of Atlassian Confluence Server running on the remote host is affected by a vulnerability as referenced in the CONFSERVER-104340 advisory.

- This High severity Information Disclosure vulnerability was introduced in versions 7.17.0, 7.19.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This Information Disclosure vulnerability, allows an unauthenticated attacker to view sensitive information via an Information Disclosure vulnerability. (CVE-2026-21579)

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 Confluence version 9.2.22, 10.2.14 or later.

Plugin Details

Severity: High

ID: 330086

File Name: confluence_confserver-104340.nasl

Version: 1.1

Type: Combined

Agent: windows, macosx, unix

Family: CGI abuses

Published: 7/27/2026

Updated: 7/27/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Enable CGI Scanning: true

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.75

CVSS v2

Risk Factor: Medium

Base Score: 5.4

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

CVSS Score Source: CVE-2026-21579

CVSS v3

Risk Factor: Medium

Base Score: 5.9

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

CVSS v4

Risk Factor: High

Base Score: 8.2

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

Vulnerability Information

CPE: cpe:/a:atlassian:confluence

Required KB Items: installed_sw/Atlassian Confluence

Patch Publication Date: 7/9/2026

Vulnerability Publication Date: 7/9/2026

Reference Information

CVE: CVE-2026-21579

IAVA: 2026-A-0762

Detections

Analytics