{"id":"CVE-2026-46403","revision":"7067a6e7683842febd3b1dc5d07e328e","records":[{"revision":"7067a6e7683842febd3b1dc5d07e328e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-46403","aliases":[],"title":"Klever-Go KVM read-only execution can commit contract delete and upgrade side effects","description":"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.","state":0,"publishedAt":"2026-07-21T19:51:18.745+00:00","modifiedAt":"2026-07-22T14:28:22.326+00:00","affected":[{"ecosystem":"Vendor product","name":"klever-go","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"klever-io\",\n                    \"product\": \"klever-go\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.7.17\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N","score":6.3,"severity":"MEDIUM"}],"references":["https://github.com/klever-io/klever-go/security/advisories/GHSA-jc6w-wmfc-fh33","https://github.com/klever-io/klever-go/commit/333f6ec910906e227705fc5767dc897d8fbfc862","https://github.com/klever-io/klever-go/commit/68b94a40824fac2d848a4ded6eb7c91ada6ce9ef"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-46403","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-46403","identifiers":["CVE-2026-46403"]},"retained":false,"historicalAffected":[]}],"coverage":[]}