SolarWinds Observability Self-Hosted < 2026.4 Multiple Vulnerabilities

high Nessus Plugin ID 371218

Synopsis

An application installed on the remote Windows host is affected by multiple vulnerabilities.

Description

The version of SolarWinds Observability Self-Hosted installed on the remote host is prior to 2026.4. It is, therefore, affected by multiple vulnerabilities:

- A broken authorization schema that can allow low-privileged users to access and modify information beyond their assigned permissions. (CVE-2026-28328)

- A server-side request forgery (SSRF) vulnerability that allows authenticated attackers to cause the application server to send requests to attacker-controlled or internal destinations. (CVE-2026-28329)

- A stored cross-site scripting (XSS) vulnerability that allows authenticated attackers to inject malicious content or JavaScript, which is displayed or executed in the browsers of other authenticated users who access the affected pages. (CVE-2026-28330)

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

Solution

Upgrade to SolarWinds Observability Self-Hosted version 2026.4 or later.

See Also

http://www.nessus.org/u?2cf3ca40

http://www.nessus.org/u?75d9880c

http://www.nessus.org/u?ac7e2a89

http://www.nessus.org/u?d6ca8ecf

Plugin Details

Severity: High

ID: 371218

File Name: solarwinds_observability_self_hosted_2026_4.nasl

Version: 1.1

Type: Combined

Agent: windows

Family: CGI abuses

Published: 10/23/2026

Updated: 10/23/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.48

CVSS v2

Risk Factor: High

Base Score: 9

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

CVSS Score Source: CVE-2026-28328

CVSS v3

Risk Factor: High

Base Score: 8.8

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

Vulnerability Information

CPE: cpe:/a:solarwinds:orion_platform

Required KB Items: installed_sw/SolarWinds Orion Core

Patch Publication Date: 10/20/2026

Vulnerability Publication Date: 10/20/2026

Reference Information

CVE: CVE-2026-28328, CVE-2026-28329, CVE-2026-28330

CWE: 79, 863, 918

IAVA: 2026-B-0303