Vulnerability-Lookup

CVE-2026-106511 (GCVE-0-2026-106511)

Vulnerability from cvelistv5 – Published: 2026-10-06 18:52 – Updated: 2026-10-07 17:55

Title

CVE-2026-106511

Summary

MultiversX's multisig-improved (repository: mx-multisig-and-modules) reference implementation of their on-chain multisig smart contract system contains a vulnerability where a missing independent authorization check allows any account with the Proposer role to perform explicitly barred actions. This vulnerability allows the Proposer role to move funds alone, draining 100% of a contract's EGLD/ESDT balance in two transactions with zero signatures.

Severity

9.8 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-07 17:53 UTC

CWE

CWE-862 Missing Authorization
CWE-863 Incorrect Authorization
CWE-306 Missing Authentication for Critical Function
CWE-862 - Missing Authorization
CWE-863 - Incorrect Authorization
CWE-306 - Missing Authentication for Critical Function

Assigner

certcc CNA under the mitre root

CNA scorecard E 42/100 over 157 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/multiversx/mx-multisig-and-modules
https://gist.github.com/x01griax/c03f4be898dc55cc…

Impacted products

1 product

Vendor	Product	Version	CPE status
MultiversX Labs S.R.L.	multisig-improved	Affected: GitHub commit 2e6dbea40f9b8ac165572a9efd4304804762a299	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-106511",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-07T17:53:21.355591Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-862",
                "description": "CWE-862 Missing Authorization",
                "lang": "en",
                "type": "CWE"
              },
              {
                "cweId": "CWE-863",
                "description": "CWE-863 Incorrect Authorization",
                "lang": "en",
                "type": "CWE"
              },
              {
                "cweId": "CWE-306",
                "description": "CWE-306 Missing Authentication for Critical Function",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-07T17:55:09.072Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "multisig-improved",
          "vendor": "MultiversX Labs S.R.L.",
          "versions": [
            {
              "status": "affected",
              "version": "GitHub commit 2e6dbea40f9b8ac165572a9efd4304804762a299"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "MultiversX\u0027s multisig-improved (repository: mx-multisig-and-modules) reference implementation of their on-chain multisig smart contract system contains a vulnerability where a missing independent authorization check allows any account with the Proposer role to perform explicitly barred actions. This vulnerability allows the Proposer role to move funds alone, draining 100% of a contract\u0027s EGLD/ESDT balance in two transactions with zero signatures."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-862 Missing Authorization",
              "lang": "en"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "CWE-863 Incorrect Authorization",
              "lang": "en"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "CWE-306 Missing Authentication for Critical Function",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-07T14:10:12.038Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://github.com/multiversx/mx-multisig-and-modules"
        },
        {
          "url": "https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "CVE-2026-106511",
      "x_generator": {
        "engine": "VINCE 3.0.49",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-106511"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2026-106511",
    "datePublished": "2026-10-06T18:52:33.825Z",
    "dateReserved": "2026-10-06T18:47:59.209Z",
    "dateUpdated": "2026-10-07T17:55:09.072Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-106511",
      "date": "2026-10-16",
      "epss": "0.00376",
      "percentile": "0.30021"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "multisig-improved",
                "vendor": "MultiversX Labs S.R.L.",
                "versions": [
                  {
                    "status": "affected",
                    "version": "GitHub commit 2e6dbea40f9b8ac165572a9efd4304804762a299"
                  }
                ]
              }
            ],
            "source": "cret@cert.org"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "MultiversX\u0027s multisig-improved (repository: mx-multisig-and-modules) reference implementation of their on-chain multisig smart contract system contains a vulnerability where a missing independent authorization check allows any account with the Proposer role to perform explicitly barred actions. This vulnerability allows the Proposer role to move funds alone, draining 100% of a contract\u0027s EGLD/ESDT balance in two transactions with zero signatures."
          }
        ],
        "id": "CVE-2026-106511",
        "lastModified": "2026-10-07T18:17:16.800",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.8,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 5.9,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-106511",
                "options": [
                  {
                    "exploitation": "poc"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-07T17:53:21.355591Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-10-06T19:18:13.500",
        "references": [
          {
            "source": "cret@cert.org",
            "url": "https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312"
          },
          {
            "source": "cret@cert.org",
            "url": "https://github.com/multiversx/mx-multisig-and-modules"
          },
          {
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "url": "https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312"
          }
        ],
        "sourceIdentifier": "cret@cert.org",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-306"
              },
              {
                "lang": "en",
                "value": "CWE-862"
              },
              {
                "lang": "en",
                "value": "CWE-863"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "HIGH",
                  "baseScore": 9.8,
                  "baseSeverity": "CRITICAL",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-106511",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-10-07T17:53:21.355591Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-862",
                    "description": "CWE-862 Missing Authorization",
                    "lang": "en",
                    "type": "CWE"
                  },
                  {
                    "cweId": "CWE-863",
                    "description": "CWE-863 Incorrect Authorization",
                    "lang": "en",
                    "type": "CWE"
                  },
                  {
                    "cweId": "CWE-306",
                    "description": "CWE-306 Missing Authentication for Critical Function",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-10-07T17:54:20.561Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "multisig-improved",
              "vendor": "MultiversX Labs S.R.L.",
              "versions": [
                {
                  "status": "affected",
                  "version": "GitHub commit 2e6dbea40f9b8ac165572a9efd4304804762a299"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "MultiversX\u0027s multisig-improved (repository: mx-multisig-and-modules) reference implementation of their on-chain multisig smart contract system contains a vulnerability where a missing independent authorization check allows any account with the Proposer role to perform explicitly barred actions. This vulnerability allows the Proposer role to move funds alone, draining 100% of a contract\u0027s EGLD/ESDT balance in two transactions with zero signatures."
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "description": "CWE-862 Missing Authorization",
                  "lang": "en"
                }
              ]
            },
            {
              "descriptions": [
                {
                  "description": "CWE-863 Incorrect Authorization",
                  "lang": "en"
                }
              ]
            },
            {
              "descriptions": [
                {
                  "description": "CWE-306 Missing Authentication for Critical Function",
                  "lang": "en"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-10-07T14:10:12.038Z",
            "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
            "shortName": "certcc"
          },
          "references": [
            {
              "url": "https://github.com/multiversx/mx-multisig-and-modules"
            },
            {
              "url": "https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "CVE-2026-106511",
          "x_generator": {
            "engine": "VINCE 3.0.49",
            "env": "prod",
            "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-106511"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "assignerShortName": "certcc",
        "cveId": "CVE-2026-106511",
        "datePublished": "2026-10-06T18:52:33.825Z",
        "dateReserved": "2026-10-06T18:47:59.209Z",
        "dateUpdated": "2026-10-07T17:55:09.072Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-106511

Vulnerability from fkie_nvd - Published: 2026-10-06 19:18 - Updated: 2026-10-07 18:17

Severity

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

Summary

References

	URL	Tags
	cret@cert.org	https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312
	cret@cert.org	https://github.com/multiversx/mx-multisig-and-modules
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "multisig-improved",
          "vendor": "MultiversX Labs S.R.L.",
          "versions": [
            {
              "status": "affected",
              "version": "GitHub commit 2e6dbea40f9b8ac165572a9efd4304804762a299"
            }
          ]
        }
      ],
      "source": "cret@cert.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "MultiversX\u0027s multisig-improved (repository: mx-multisig-and-modules) reference implementation of their on-chain multisig smart contract system contains a vulnerability where a missing independent authorization check allows any account with the Proposer role to perform explicitly barred actions. This vulnerability allows the Proposer role to move funds alone, draining 100% of a contract\u0027s EGLD/ESDT balance in two transactions with zero signatures."
    }
  ],
  "id": "CVE-2026-106511",
  "lastModified": "2026-10-07T18:17:16.800",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-106511",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-07T17:53:21.355591Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-10-06T19:18:13.500",
  "references": [
    {
      "source": "cret@cert.org",
      "url": "https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312"
    },
    {
      "source": "cret@cert.org",
      "url": "https://github.com/multiversx/mx-multisig-and-modules"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312"
    }
  ],
  "sourceIdentifier": "cret@cert.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        },
        {
          "lang": "en",
          "value": "CWE-862"
        },
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}

GHSA-VXX8-8P7V-9MVP

Vulnerability from github – Published: 2026-10-06 21:31 – Updated: 2026-10-07 18:32

Details

Severity

9.8 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-106511"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-06T19:18:13Z",
    "severity": "CRITICAL"
  },
  "details": "MultiversX\u0027s multisig-improved (repository: mx-multisig-and-modules) reference implementation of their on-chain multisig smart contract system contains a vulnerability where a missing independent authorization check allows any account with the Proposer role to perform explicitly barred actions. This vulnerability allows the Proposer role to move funds alone, draining 100% of a contract\u0027s EGLD/ESDT balance in two transactions with zero signatures.",
  "id": "GHSA-vxx8-8p7v-9mvp",
  "modified": "2026-10-07T18:32:02Z",
  "published": "2026-10-06T21:31:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-106511"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312"
    },
    {
      "type": "WEB",
      "url": "https://github.com/multiversx/mx-multisig-and-modules"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

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-2026-106511 (GCVE-0-2026-106511)

FKIE_CVE-2026-106511

GHSA-VXX8-8P7V-9MVP

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour