CVE-2026-34064 (GCVE-0-2026-34064)

Vulnerability from cvelistv5 – Published: 2026-04-22 19:43 – Updated: 2026-04-23 16:25
VLAI
Title
nimiq-account: Vesting insufficient funds error can panic
Summary
nimiq-account contains account primitives to be used in Nimiq's Rust implementation. Prior to version 1.3.0, `VestingContract::can_change_balance` returns `AccountError::InsufficientFunds` when `new_balance < min_cap`, but it constructs the error using `balance: self.balance - min_cap`. `Coin::sub` panics on underflow, so if an attacker can reach a state where `min_cap > balance`, the node crashes while trying to return an error. The `min_cap > balance` precondition is attacker-reachable because the vesting contract creation data (32-byte format) allows encoding `total_amount` without validating `total_amount <= transaction.value` (the real contract balance). After creating such a vesting contract, the attacker can broadcast an outgoing transaction to trigger the panic during mempool admission and block processing. The patch for this vulnerability is included as part of v1.3.0. No known workarounds are available.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-23 13:06 UTC
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 8026 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
nimiq nimiq-account Affected: < 1.3.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-34064",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-23T13:06:41.242710Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-23T16:25:19.186Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "nimiq-account",
          "vendor": "nimiq",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.3.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "nimiq-account contains account primitives to be used in Nimiq\u0027s Rust implementation. Prior to version 1.3.0, `VestingContract::can_change_balance` returns `AccountError::InsufficientFunds` when `new_balance \u003c min_cap`, but it constructs the error using `balance: self.balance - min_cap`. `Coin::sub` panics on underflow, so if an attacker can reach a state where `min_cap \u003e balance`, the node crashes while trying to return an error. The `min_cap \u003e balance` precondition is attacker-reachable because the vesting contract creation data (32-byte format) allows encoding `total_amount` without validating `total_amount \u003c= transaction.value` (the real contract balance). After creating such a vesting contract, the attacker can broadcast an outgoing transaction to trigger the panic during mempool admission and block processing. The patch for this vulnerability is included as part of v1.3.0. No known workarounds are available."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-191",
              "description": "CWE-191: Integer Underflow (Wrap or Wraparound)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-22T19:43:04.453Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-vc34-39q2-m6q3",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-vc34-39q2-m6q3"
        },
        {
          "name": "https://github.com/nimiq/core-rs-albatross/pull/3658",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nimiq/core-rs-albatross/pull/3658"
        },
        {
          "name": "https://github.com/nimiq/core-rs-albatross/commit/4d01946f0b3d6c6e31786f91cdfb3eb902908da0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nimiq/core-rs-albatross/commit/4d01946f0b3d6c6e31786f91cdfb3eb902908da0"
        },
        {
          "name": "https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0"
        }
      ],
      "source": {
        "advisory": "GHSA-vc34-39q2-m6q3",
        "discovery": "UNKNOWN"
      },
      "title": "nimiq-account: Vesting insufficient funds error can panic"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-34064",
    "datePublished": "2026-04-22T19:43:04.453Z",
    "dateReserved": "2026-03-25T16:21:40.867Z",
    "dateUpdated": "2026-04-23T16:25:19.186Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-34064",
      "date": "2026-11-05",
      "epss": "0.00275",
      "percentile": "0.19984"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "nimiq-account",
                "vendor": "nimiq",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 1.3.0"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:nimiq:nimiq_proof-of-stake:*:*:*:*:*:rust:*:*",
                    "matchCriteriaId": "CD0CAAD1-7626-4A4A-A6F8-9DC46FE50731",
                    "versionEndExcluding": "1.3.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "nimiq-account contains account primitives to be used in Nimiq\u0027s Rust implementation. Prior to version 1.3.0, `VestingContract::can_change_balance` returns `AccountError::InsufficientFunds` when `new_balance \u003c min_cap`, but it constructs the error using `balance: self.balance - min_cap`. `Coin::sub` panics on underflow, so if an attacker can reach a state where `min_cap \u003e balance`, the node crashes while trying to return an error. The `min_cap \u003e balance` precondition is attacker-reachable because the vesting contract creation data (32-byte format) allows encoding `total_amount` without validating `total_amount \u003c= transaction.value` (the real contract balance). After creating such a vesting contract, the attacker can broadcast an outgoing transaction to trigger the panic during mempool admission and block processing. The patch for this vulnerability is included as part of v1.3.0. No known workarounds are available."
          },
          {
            "lang": "es",
            "value": "nimiq-account contiene primitivas de cuenta para ser utilizadas en la implementaci\u00f3n de Nimiq en Rust. Antes de la versi\u00f3n 1.3.0, \u201cVestingContract::can_change_balance\u201d devuelve \u201cAccountError::InsufficientFunds\u201d cuando \u201cnew_balance \u003c min_cap\u201d, pero construye el error usando \u201cbalance: self.balance - min_cap\u201d. \u201cCoin::sub\u201d entra en p\u00e1nico por desbordamiento negativo, as\u00ed que si un atacante puede alcanzar un estado donde \u201cmin_cap \u003e balance\u201d, el nodo falla mientras intenta devolver un error. La precondici\u00f3n \u201cmin_cap \u003e balance\u201d es alcanzable por el atacante porque los datos de creaci\u00f3n del contrato de vesting (formato de 32 bytes) permiten codificar \u201ctotal_amount\u201d sin validar \u201ctotal_amount \u003c= transaction.value\u201d (el saldo real del contrato). Despu\u00e9s de crear dicho contrato de vesting, el atacante puede difundir una transacci\u00f3n saliente para desencadenar el p\u00e1nico durante la admisi\u00f3n en el mempool y el procesamiento de bloques. El parche para esta vulnerabilidad est\u00e1 incluido como parte de la v1.3.0. No se conocen soluciones alternativas disponibles."
          }
        ],
        "id": "CVE-2026-34064",
        "lastModified": "2026-10-26T21:10:00.170",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 1.4,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.2,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 4.2,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-34064",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-23T13:06:41.242710Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-04-22T20:16:40.900",
        "references": [
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch"
            ],
            "url": "https://github.com/nimiq/core-rs-albatross/commit/4d01946f0b3d6c6e31786f91cdfb3eb902908da0"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Issue Tracking",
              "Patch"
            ],
            "url": "https://github.com/nimiq/core-rs-albatross/pull/3658"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Release Notes"
            ],
            "url": "https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-vc34-39q2-m6q3"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-191"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-06-05T19:38:49+00:00",
      "cve": "CVE-2026-34064",
      "id": "CVE-2026-34064",
      "initial_release_date": "2026-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "nimiq-account: Vesting insufficient funds error can panic",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34064.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-34064",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-04-23T13:06:41.242710Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-04-23T13:29:35.983Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "nimiq-account",
              "vendor": "nimiq",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 1.3.0"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "nimiq-account contains account primitives to be used in Nimiq\u0027s Rust implementation. Prior to version 1.3.0, `VestingContract::can_change_balance` returns `AccountError::InsufficientFunds` when `new_balance \u003c min_cap`, but it constructs the error using `balance: self.balance - min_cap`. `Coin::sub` panics on underflow, so if an attacker can reach a state where `min_cap \u003e balance`, the node crashes while trying to return an error. The `min_cap \u003e balance` precondition is attacker-reachable because the vesting contract creation data (32-byte format) allows encoding `total_amount` without validating `total_amount \u003c= transaction.value` (the real contract balance). After creating such a vesting contract, the attacker can broadcast an outgoing transaction to trigger the panic during mempool admission and block processing. The patch for this vulnerability is included as part of v1.3.0. No known workarounds are available."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-191",
                  "description": "CWE-191: Integer Underflow (Wrap or Wraparound)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-04-22T19:43:04.453Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-vc34-39q2-m6q3",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-vc34-39q2-m6q3"
            },
            {
              "name": "https://github.com/nimiq/core-rs-albatross/pull/3658",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/nimiq/core-rs-albatross/pull/3658"
            },
            {
              "name": "https://github.com/nimiq/core-rs-albatross/commit/4d01946f0b3d6c6e31786f91cdfb3eb902908da0",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/nimiq/core-rs-albatross/commit/4d01946f0b3d6c6e31786f91cdfb3eb902908da0"
            },
            {
              "name": "https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0"
            }
          ],
          "source": {
            "advisory": "GHSA-vc34-39q2-m6q3",
            "discovery": "UNKNOWN"
          },
          "title": "nimiq-account: Vesting insufficient funds error can panic"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-34064",
        "datePublished": "2026-04-22T19:43:04.453Z",
        "dateReserved": "2026-03-25T16:21:40.867Z",
        "dateUpdated": "2026-04-22T19:43:04.453Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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

JSON

Loading timeline…




    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.