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    CVE-2026-40323

    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.

    Published:Apr 17, 2026
    Last Modified:May 13, 2026
    EPS:Apr 17, 2026
    EPSS Score:0.00013
    CVSS Score:7.5

    Affected Products

    Vendor
    Succinct
    Product
    Sp1
    Vendor
    Succinctlabs
    Product
    Sp1

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High