CVE-2026-40323
Published: 18 April 2026
Summary
CVE-2026-40323 is a high-severity Insufficient Verification of Data Authenticity (CWE-345) vulnerability in Succinct Sp1. Its CVSS base score is 8.9 (High).
Operationally, ranked at the 9.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-24062
Vulnerability details
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…
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recursive proof from a shard proof that the native verifier would reject. Version 6.1.0 fixes the issue.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Insufficient information to map techniques.Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requires explicit verification of data authenticity from authoritative sources, preventing acceptance of unauthenticated resolution responses.
Control requires verification of data authenticity/integrity (e.g., checksums) after aggregation/packing, directly reducing exploitation of insufficient verification before transmission.
Requires use of proper integrity verification tools, reducing the chance an incorrect check value is accepted.
The control implements verification mechanisms that detect tampering by ensuring data authenticity.
Directly requires independent verification of matching output before adverse decisions, mitigating insufficient authenticity checks on data from external sources.
Proper validation of integrity check values is required for reliable tamper detection, directly reducing undetected modification risks.
Use of approved PKI certificates provides verifiable data authenticity and origin for communications and artifacts.
Mandates provision of authenticity and integrity artifacts that enable verification of name/address resolution data.