{"id":"CVE-2026-84860","aliases":["EUVD-2026-80827","GHSA-4vrr-rhf8-cpc9"],"status":"published","title":"Scada-LTS DWR Authorization Bypass - Systemic","description":"ScadaLTS 2.8.1-release-candidate build 0 is affected by an Authorization Bypass\n\n\n\nSpring 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.\n\n\n\nThis is the systemic root cause that enables multiple other findings to be exploited as a low privilege user.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00482,"percentile":0.42,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2026-09-16T14:52:23Z","modified":"2026-09-18T19:18:42Z","products":[{"vendor":"scada-lts","product":"scada-lts"}],"references":[{"url":"https://www.tenable.com/security/research/tra-2026-60"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84860"},{"url":"https://github.com/advisories/GHSA-4vrr-rhf8-cpc9"}],"sources":{"cve":[{"id":"CVE-2026-84860","title":"Scada-LTS DWR Authorization Bypass - Systemic","description":"ScadaLTS 2.8.1-release-candidate build 0 is affected by an Authorization Bypass\n\n\n\nSpring 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.\n\n\n\nThis is the systemic root cause that enables multiple other findings to be exploited as a low privilege user.","status":"published","published":"2026-09-16T14:52:23.502Z","modified":"2026-09-17T18:37:14.382Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:20:08.391556Z"}],"euvd":[{"id":"EUVD-2026-80827","description":"ScadaLTS 2.8.1-release-candidate build 0 is affected by an Authorization Bypass\n\n\n\nSpring 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.\n\n\n\nThis is the systemic root cause that enables multiple other findings to be exploited as a low privilege user.","status":"published","published":"2026-09-16T14:52:23Z","modified":"2026-09-17T18:37:14Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T17:28:10.833571Z"}],"ghsa":[{"id":"GHSA-4vrr-rhf8-cpc9","title":"ScadaLTS 2.8.1-release-candidate build 0 is affected by an Authorization Bypass\n\n\n\nSpring...","description":"ScadaLTS 2.8.1-release-candidate build 0 is affected by an Authorization Bypass\n\n\n\nSpring 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.\n\n\n\nThis is the systemic root cause that enables multiple other findings to be exploited as a low privilege user.","status":"published","published":"2026-09-16T15:31:13Z","modified":"2026-09-17T21:31:38Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:12:08.779152Z"}],"nvd":[{"id":"CVE-2026-84860","description":"ScadaLTS 2.8.1-release-candidate build 0 is affected by an Authorization Bypass\n\n\n\nSpring 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.\n\n\n\nThis is the systemic root cause that enables multiple other findings to be exploited as a low privilege user.","status":"published","published":"2026-09-16T15:18:00.76Z","modified":"2026-09-18T19:18:42.907Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:12:48.630594Z"}]}}