{"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":"2026-09-24T15:05:37.458Z"},"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"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-24T14:03:22.911530Z","id":"CVE-2026-82405","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-24T15:05:37.458Z"}}]}}