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.
History

Mon, 20 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 20 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Succinctlabs
Succinctlabs sp1
Vendors & Products Succinctlabs
Succinctlabs sp1

Fri, 17 Apr 2026 23:30:00 +0000

Type Values Removed Values Added
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.
Title SP1 V6 Recursion Circuit Row-Count Binding Gap
Weaknesses CWE-345
CWE-354
References
Metrics cvssV4_0

{'score': 8.9, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-17T22:58:42.580Z

Updated: 2026-04-20T16:16:41.143Z

Reserved: 2026-04-10T21:41:54.505Z

Link: CVE-2026-40323

cve-icon Vulnrichment

Updated: 2026-04-20T16:16:36.646Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-18T00:16:36.767

Modified: 2026-04-20T19:03:07.607

Link: CVE-2026-40323

cve-icon Redhat

No data.