CVE-2026-46654
Plonky3 MultiField32Challenger: transcript malleability and challenge entropy loss
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
Plonky3 is a toolkit for polynomial IOPs (PIOPs). Prior to versions 0.4.3 and 0.5.3, an attacker controlling prover-side observations can craft distinct transcripts that produce identical challenges, breaking the binding property of Fiat-Shamir. This issue has been patched in versions 0.4.3 and 0.5.3.
| CWE | CWE-1240 CWE-345 |
| Vendor | plonky3 |
| Product | plonky3 |
| Published | Jun 10, 2026 |
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Affected Versions
Plonky3 / Plonky3
< 0.4.3 >= 0.5.0, < 0.5.3