CVE-2026-84860

Published Sep 16, 2026

Last updated 2 months ago

CVSS high 8.8
Scada

Overview

Description
ScadaLTS 2.8.1-release-candidate build 0 is affected by an Authorization Bypass Spring Security gates DWR endpoints by URL path pattern, but DWR itself dispatches method calls based on the POST body parameters c0-scriptName and c0-methodName. The crossDomainSessionSecurity setting in web.xml is set to false, which disables DWR's built-in origin validation. This means any authenticated user can invoke any DWR method (regardless of the URL-based access control) by sending their request to a URL they are permitted to access (e.g. MiscDwr.initializeLongPoll.dwr) while targeting a restricted class in the POST body. This is the systemic root cause that enables multiple other findings to be exploited as a low privilege user.
Source
vulnreport@tenable.com
NVD status
Deferred

Risk scores

CVSS 3.1

Type
Secondary
Base score
8.8
Impact score
5.9
Exploitability score
2.8
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE-639

Social media

Hype score
Not currently trending

  1. 🚨 HIGH: CVE-2026-84860 (CVSS 8.8) - Authorization Bypass in ScadaLTS 2.8.1-RC build 0. Authenticated users can invoke restricted DWR methods by manipulating POST parameters, bypassing URL-based access controls. Patch immediately. #CVE #PatchNow https://t.co/4UrJx7rde3

    @DFIR_Lab

    30 Sept 2026

    20 Impressions

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References

Sources include official advisories and independent security research.