{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46403", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-13T21:04:10.932Z", "datePublished": "2026-07-21T19:51:18.745Z", "dateUpdated": "2026-07-22T14:28:22.326Z"}, "containers": {"cna": {"title": "Klever-Go KVM read-only execution can commit contract delete and upgrade side effects", "problemTypes": [{"descriptions": [{"cweId": "CWE-693", "lang": "en", "description": "CWE-693: Protection Mechanism Failure", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/klever-io/klever-go/security/advisories/GHSA-jc6w-wmfc-fh33", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/klever-io/klever-go/security/advisories/GHSA-jc6w-wmfc-fh33"}, {"name": "https://github.com/klever-io/klever-go/commit/333f6ec910906e227705fc5767dc897d8fbfc862", "tags": ["x_refsource_MISC"], "url": "https://github.com/klever-io/klever-go/commit/333f6ec910906e227705fc5767dc897d8fbfc862"}, {"name": "https://github.com/klever-io/klever-go/commit/68b94a40824fac2d848a4ded6eb7c91ada6ce9ef", "tags": ["x_refsource_MISC"], "url": "https://github.com/klever-io/klever-go/commit/68b94a40824fac2d848a4ded6eb7c91ada6ce9ef"}], "affected": [{"vendor": "klever-io", "product": "klever-go", "versions": [{"version": "< 1.7.17", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-21T19:51:18.745Z"}, "descriptions": [{"lang": "en", "value": "Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.17, KVM exposes `ExecuteReadOnlyWithTypedArguments` as a read-only execution mechanism. The hook saves the previous read-only state, sets `runtime.SetReadOnly(true)`, executes the destination context, and then restores the previous read-only state. However, the indirect contract delete and upgrade paths do not reject execution when `runtime.ReadOnly()` is true. As a result, a contract reached through read-only execution can call the production delete hook for a target contract it owns. The delete path appends the target address to `vmOutput.DeletedAccounts`, the output context merges `DeletedAccounts` into the caller output, and the smart contract processor later processes the VM output by deleting accounts listed in that field. The root cause is that read-only mode is applied as runtime state, but not enforced by the state-changing delete and upgrade host-core paths. This breaks the expected isolation boundary for workflows that rely on read-only calls to inspect another contract without allowing that callee to produce state-changing VM output. The issue is fixed in v1.7.17. Contract delete and upgrade host-core paths now reject execution when `runtime.ReadOnly()` is true. The invariant is regression-tested for delete, upgrade, storage writes, value transfers, and any VM output field that can later mutate chain state."}], "source": {"advisory": "GHSA-jc6w-wmfc-fh33", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/klever-io/klever-go/security/advisories/GHSA-jc6w-wmfc-fh33", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-22T14:26:16.323007Z", "id": "CVE-2026-46403", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-22T14:28:22.326Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-46403", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-22T14:26:16.323007Z"}}}], "references": [{"url": "https://github.com/klever-io/klever-go/security/advisories/GHSA-jc6w-wmfc-fh33", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-22T14:27:46.153Z"}}], "cna": {"title": "Klever-Go KVM read-only execution can commit contract delete and upgrade side effects", "source": {"advisory": "GHSA-jc6w-wmfc-fh33", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "klever-io", "product": "klever-go", "versions": [{"status": "affected", "version": "< 1.7.17"}]}], "references": [{"url": "https://github.com/klever-io/klever-go/security/advisories/GHSA-jc6w-wmfc-fh33", "name": "https://github.com/klever-io/klever-go/security/advisories/GHSA-jc6w-wmfc-fh33", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/klever-io/klever-go/commit/333f6ec910906e227705fc5767dc897d8fbfc862", "name": "https://github.com/klever-io/klever-go/commit/333f6ec910906e227705fc5767dc897d8fbfc862", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/klever-io/klever-go/commit/68b94a40824fac2d848a4ded6eb7c91ada6ce9ef", "name": "https://github.com/klever-io/klever-go/commit/68b94a40824fac2d848a4ded6eb7c91ada6ce9ef", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.17, KVM exposes `ExecuteReadOnlyWithTypedArguments` as a read-only execution mechanism. The hook saves the previous read-only state, sets `runtime.SetReadOnly(true)`, executes the destination context, and then restores the previous read-only state. However, the indirect contract delete and upgrade paths do not reject execution when `runtime.ReadOnly()` is true. As a result, a contract reached through read-only execution can call the production delete hook for a target contract it owns. The delete path appends the target address to `vmOutput.DeletedAccounts`, the output context merges `DeletedAccounts` into the caller output, and the smart contract processor later processes the VM output by deleting accounts listed in that field. The root cause is that read-only mode is applied as runtime state, but not enforced by the state-changing delete and upgrade host-core paths. This breaks the expected isolation boundary for workflows that rely on read-only calls to inspect another contract without allowing that callee to produce state-changing VM output. The issue is fixed in v1.7.17. Contract delete and upgrade host-core paths now reject execution when `runtime.ReadOnly()` is true. The invariant is regression-tested for delete, upgrade, storage writes, value transfers, and any VM output field that can later mutate chain state."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-693", "description": "CWE-693: Protection Mechanism Failure"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-21T19:51:18.745Z"}}}, "cveMetadata": {"cveId": "CVE-2026-46403", "state": "PUBLISHED", "dateUpdated": "2026-07-22T14:28:22.326Z", "dateReserved": "2026-05-13T21:04:10.932Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-07-21T19:51:18.745Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

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