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High · 8.9 CVE-2026-40323 EUVD-2026-24062GHSA-63x8-x938-vx33

SP1 V6 Recursion Circuit Row-Count Binding Gap

Published Apr 17, 2026 · Updated Apr 20, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
succinctlabs sp1 >= 6.0.0, < 6.1.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
crates.io sp1_prover >= 6.0.0, < 6.1.0 6.1.0 GHSA-63x8-x938-vx33
crates.io sp1_recursion_circuit >= 6.0.0, < 6.1.0 6.1.0 GHSA-63x8-x938-vx33
crates.io sp1_sdk >= 6.0.0, < 6.1.0 6.1.0 GHSA-63x8-x938-vx33

References