{
    "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"
                }
            }
        ]
    }
}