{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40323","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-10T21:41:54.505Z","datePublished":"2026-04-17T22:58:42.580Z","dateUpdated":"2026-04-20T16:16:41.143Z"},"containers":{"cna":{"title":"SP1 V6 Recursion Circuit Row-Count Binding Gap","problemTypes":[{"descriptions":[{"cweId":"CWE-345","lang":"en","description":"CWE-345: Insufficient Verification of Data Authenticity","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-354","lang":"en","description":"CWE-354: Improper Validation of Integrity Check Value","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","baseScore":8.9,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/succinctlabs/sp1/security/advisories/GHSA-63x8-x938-vx33","tags":["x_refsource_CONFIRM"],"url":"https://github.com/succinctlabs/sp1/security/advisories/GHSA-63x8-x938-vx33"},{"name":"https://github.com/succinctlabs/sp1/releases/tag/v6.1.0","tags":["x_refsource_MISC"],"url":"https://github.com/succinctlabs/sp1/releases/tag/v6.1.0"}],"affected":[{"vendor":"succinctlabs","product":"sp1","versions":[{"version":">= 6.0.0, < 6.1.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-04-17T22:58:42.580Z"},"descriptions":[{"lang":"en","value":"SP1 is a zero‑knowledge virtual machine that proves the correct execution of programs compiled for the RISC-V architecture. In versions 6.0.0 through 6.0.2, a soundness vulnerability in the SP1 V6 recursive shard verifier allows a malicious prover to construct a recursive proof from a shard proof that the native verifier would reject. Version 6.1.0 fixes the issue."}],"source":{"advisory":"GHSA-63x8-x938-vx33","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-20T16:16:33.342756Z","id":"CVE-2026-40323","options":[{"Exploitation":"none"},{"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":"2026-04-20T16:16:41.143Z"}}]}}