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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/succinctlabs/sp1/releases/tag/v6.1.0	Release Notes
https://github.com/succinctlabs/sp1/security/advisories/GHSA-63x8-x938-vx33	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:succinct:sp1:*:*:*:*:*:*:*:*

History

13 May 2026, 13:44

Type	Values Removed	Values Added
References	~~() https://github.com/succinctlabs/sp1/releases/tag/v6.1.0 -~~	() https://github.com/succinctlabs/sp1/releases/tag/v6.1.0 - Release Notes
References	~~() https://github.com/succinctlabs/sp1/security/advisories/GHSA-63x8-x938-vx33 -~~	() https://github.com/succinctlabs/sp1/security/advisories/GHSA-63x8-x938-vx33 - Vendor Advisory
CPE		cpe:2.3:a:succinct:sp1::::::::
First Time		Succinct sp1 Succinct
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5

18 Apr 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-18 00:16

Updated : 2026-06-17 10:45

NVD link : CVE-2026-40323

Mitre link : CVE-2026-40323

CVE.ORG link : CVE-2026-40323

JSON object : View

Products Affected

succinct

sp1

CWE

CWE-345

Insufficient Verification of Data Authenticity

CWE-354

Improper Validation of Integrity Check Value

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