Improper Validation of Integrity Check Value Affecting sp1-sdk package, versions >=6.0.0 <6.1.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RUST-SP1SDK-16301614
- published27 Apr 2026
- disclosed14 Apr 2026
- creditUnknown
Introduced: 14 Apr 2026
NewCVE-2026-40323 (opens in a new tab)How to fix?
Upgrade sp1-sdk to version 6.1.0 or higher.
Overview
Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value through inconsistent handling of row counts and prefix sums in the recursive shard verifier process. An attacker can bypass expected verification and potentially forge or misrepresent circuit proofs by supplying divergent trace shapes for commitment binding and polynomial evaluation.