Vulnerability-Lookup

CVE-2026-84860 (GCVE-0-2026-84860)

Vulnerability from cvelistv5 – Published: 2026-09-16 14:52 – Updated: 2026-09-17 18:37

Title

Scada-LTS DWR Authorization Bypass - Systemic

Summary

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.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-17 18:36 UTC

CWE

CWE-639 - Authorization Bypass Through User-Controlled Key

Assigner

tenable mitre root

References

1 reference

URL	Tags
https://www.tenable.com/security/research/tra-2026-60

Impacted products

1 product

Vendor	Product	Version	CPE status
Scada-LTS	Scada-LTS	Affected: 2.8.1	guessed

Date Public

2026-09-16 14:44

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-84860",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-17T18:36:47.898521Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-639",
                "description": "CWE-639 Authorization Bypass Through User-Controlled Key",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-17T18:37:14.382Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Scada-LTS",
          "vendor": "Scada-LTS",
          "versions": [
            {
              "status": "affected",
              "version": "2.8.1"
            }
          ]
        }
      ],
      "datePublic": "2026-09-16T14:44:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eScadaLTS 2.8.1-release-candidate build 0 is affected by an\u0026nbsp;Authorization Bypass\u003c/p\u003e\u003cp\u003e\u003cspan\u003eSpring Security gates DWR endpoints by URL path pattern, but DWR itself dispatches method calls based on the POST body parameters \u003c/span\u003e\u003cspan\u003ec0-scriptName\u003c/span\u003e\u003cspan\u003e and \u003c/span\u003e\u003cspan\u003ec0-methodName\u003c/span\u003e\u003cspan\u003e. The \u003c/span\u003e\u003cspan\u003ecrossDomainSessionSecurity\u003c/span\u003e\u003cspan\u003e setting in \u003c/span\u003e\u003cspan\u003eweb.xml\u003c/span\u003e\u003cspan\u003e is set to \u003c/span\u003e\u003cspan\u003efalse\u003c/span\u003e\u003cspan\u003e, which disables DWR\u0027s 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. \u003c/span\u003e\u003cspan\u003eMiscDwr.initializeLongPoll.dwr\u003c/span\u003e\u003cspan\u003e) while targeting a restricted class in the POST body.\u003c/span\u003e\u003c/p\u003e\u003cp\u003e\u003cspan\u003eThis is the systemic root cause that enables multiple other findings to be exploited as a low privilege user.\u003c/span\u003e\u003c/p\u003e"
            }
          ],
          "value": "ScadaLTS 2.8.1-release-candidate build 0 is affected by an\u00a0Authorization 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\u0027s 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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T14:52:23.502Z",
        "orgId": "5ac1ecc2-367a-4d16-a0b2-35d495ddd0be",
        "shortName": "tenable"
      },
      "references": [
        {
          "url": "https://www.tenable.com/security/research/tra-2026-60"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Scada-LTS DWR Authorization Bypass - Systemic",
      "x_generator": {
        "engine": "Vulnogram 1.0.5"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "5ac1ecc2-367a-4d16-a0b2-35d495ddd0be",
    "assignerShortName": "tenable",
    "cveId": "CVE-2026-84860",
    "datePublished": "2026-09-16T14:52:23.502Z",
    "dateReserved": "2026-09-02T13:26:23.692Z",
    "dateUpdated": "2026-09-17T18:37:14.382Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-84860",
      "date": "2026-09-22",
      "epss": "0.00485",
      "percentile": "0.40849"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Scada-LTS",
                "vendor": "Scada-LTS",
                "versions": [
                  {
                    "status": "affected",
                    "version": "2.8.1"
                  }
                ]
              }
            ],
            "source": "vulnreport@tenable.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "ScadaLTS 2.8.1-release-candidate build 0 is affected by an\u00a0Authorization 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\u0027s 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."
          }
        ],
        "id": "CVE-2026-84860",
        "lastModified": "2026-09-18T19:18:42.907",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 5.9,
              "source": "vulnreport@tenable.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-84860",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-17T18:36:47.898521Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-09-16T15:18:00.760",
        "references": [
          {
            "source": "vulnreport@tenable.com",
            "url": "https://www.tenable.com/security/research/tra-2026-60"
          }
        ],
        "sourceIdentifier": "vulnreport@tenable.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-639"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-84860",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-09-17T18:36:47.898521Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-639",
                    "description": "CWE-639 Authorization Bypass Through User-Controlled Key",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-09-17T18:37:03.855Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Scada-LTS",
              "vendor": "Scada-LTS",
              "versions": [
                {
                  "status": "affected",
                  "version": "2.8.1"
                }
              ]
            }
          ],
          "datePublic": "2026-09-16T14:44:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eScadaLTS 2.8.1-release-candidate build 0 is affected by an\u0026nbsp;Authorization Bypass\u003c/p\u003e\u003cp\u003e\u003cspan\u003eSpring Security gates DWR endpoints by URL path pattern, but DWR itself dispatches method calls based on the POST body parameters \u003c/span\u003e\u003cspan\u003ec0-scriptName\u003c/span\u003e\u003cspan\u003e and \u003c/span\u003e\u003cspan\u003ec0-methodName\u003c/span\u003e\u003cspan\u003e. The \u003c/span\u003e\u003cspan\u003ecrossDomainSessionSecurity\u003c/span\u003e\u003cspan\u003e setting in \u003c/span\u003e\u003cspan\u003eweb.xml\u003c/span\u003e\u003cspan\u003e is set to \u003c/span\u003e\u003cspan\u003efalse\u003c/span\u003e\u003cspan\u003e, which disables DWR\u0027s 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. \u003c/span\u003e\u003cspan\u003eMiscDwr.initializeLongPoll.dwr\u003c/span\u003e\u003cspan\u003e) while targeting a restricted class in the POST body.\u003c/span\u003e\u003c/p\u003e\u003cp\u003e\u003cspan\u003eThis is the systemic root cause that enables multiple other findings to be exploited as a low privilege user.\u003c/span\u003e\u003c/p\u003e"
                }
              ],
              "value": "ScadaLTS 2.8.1-release-candidate build 0 is affected by an\u00a0Authorization 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\u0027s 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."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-09-16T14:52:23.502Z",
            "orgId": "5ac1ecc2-367a-4d16-a0b2-35d495ddd0be",
            "shortName": "tenable"
          },
          "references": [
            {
              "url": "https://www.tenable.com/security/research/tra-2026-60"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Scada-LTS DWR Authorization Bypass - Systemic",
          "x_generator": {
            "engine": "Vulnogram 1.0.5"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "5ac1ecc2-367a-4d16-a0b2-35d495ddd0be",
        "assignerShortName": "tenable",
        "cveId": "CVE-2026-84860",
        "datePublished": "2026-09-16T14:52:23.502Z",
        "dateReserved": "2026-09-02T13:26:23.692Z",
        "dateUpdated": "2026-09-16T14:52:23.502Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-84860

Vulnerability from fkie_nvd - Published: 2026-09-16 15:18 - Updated: 2026-09-18 19:18

Severity

8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	vulnreport@tenable.com	https://www.tenable.com/security/research/tra-2026-60

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Scada-LTS",
          "vendor": "Scada-LTS",
          "versions": [
            {
              "status": "affected",
              "version": "2.8.1"
            }
          ]
        }
      ],
      "source": "vulnreport@tenable.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "ScadaLTS 2.8.1-release-candidate build 0 is affected by an\u00a0Authorization 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\u0027s 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."
    }
  ],
  "id": "CVE-2026-84860",
  "lastModified": "2026-09-18T19:18:42.907",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "vulnreport@tenable.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-84860",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-17T18:36:47.898521Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-16T15:18:00.760",
  "references": [
    {
      "source": "vulnreport@tenable.com",
      "url": "https://www.tenable.com/security/research/tra-2026-60"
    }
  ],
  "sourceIdentifier": "vulnreport@tenable.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}

GHSA-4VRR-RHF8-CPC9

Vulnerability from github – Published: 2026-09-16 15:31 – Updated: 2026-09-17 21:31

Details

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.

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-84860"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-639"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-16T15:18:00Z",
    "severity": "HIGH"
  },
  "details": "ScadaLTS 2.8.1-release-candidate build 0 is affected by an\u00a0Authorization 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\u0027s 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.",
  "id": "GHSA-4vrr-rhf8-cpc9",
  "modified": "2026-09-17T21:31:35Z",
  "published": "2026-09-16T15:31:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84860"
    },
    {
      "type": "WEB",
      "url": "https://www.tenable.com/security/research/tra-2026-60"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-84860 (GCVE-0-2026-84860)

FKIE_CVE-2026-84860

GHSA-4VRR-RHF8-CPC9

Tags

Sightings

Nomenclature

Related by attack behaviour