{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-82405",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-28T22:00:43.513Z",
        "datePublished": "2026-09-23T19:26:12.967Z",
        "dateUpdated": "2026-09-23T19:26:12.967Z"
    },
    "containers": {
        "cna": {
            "title": "Klever-Go Account takeover: `kleverUpdateAccountPermission` authorizes on attacker-controlled `RecipientAddr` instead of the authenticated caller",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-863",
                            "lang": "en",
                            "description": "CWE-863: Incorrect Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.7,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/klever-io/klever-go/security/advisories/GHSA-97cv-x867-6xhm",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/klever-io/klever-go/security/advisories/GHSA-97cv-x867-6xhm"
                },
                {
                    "name": "https://github.com/klever-io/klever-go/commit/c58740eb74d7ee8f07db1e18a7d6214b5559ba32",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/klever-io/klever-go/commit/c58740eb74d7ee8f07db1e18a7d6214b5559ba32"
                },
                {
                    "name": "https://gist.github.com/mabdullah22/a41f90aa5ba86bbebf121f739bd5f5e9",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://gist.github.com/mabdullah22/a41f90aa5ba86bbebf121f739bd5f5e9"
                },
                {
                    "name": "https://github.com/klever-io/klever-go/releases/tag/v1.7.20",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/klever-io/klever-go/releases/tag/v1.7.20"
                }
            ],
            "affected": [
                {
                    "vendor": "klever-io",
                    "product": "klever-go",
                    "versions": [
                        {
                            "version": "< 1.7.20",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-23T19:26:12.967Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, the KleverUpdateAccountPermission built-in authorizes replacement of a target account's permissions by checking attacker-controlled vmInput.RecipientAddr instead of authenticated vmInput.CallerAddr. An attacker-controlled contract can choose a victim account with configured permissions as RecipientAddr, and contractHasValidPermission can accept the victim's default self-signer as authorization. UpdatePermission can then replace the victim's entire permission set with attacker-supplied Owner permissions, enabling asset theft or permanent lockout without a victim key or signature. Accounts without stored permissions and the native transaction path are not affected. This issue is fixed in version 1.7.20."
                }
            ],
            "source": {
                "advisory": "GHSA-97cv-x867-6xhm",
                "discovery": "UNKNOWN"
            }
        }
    }
}