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Plonky3 MultiField32Challenger: transcript malleability and challenge entropy loss

🗓️ 21 May 2026 20:24:21Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 4 Views

Fiat-Shamir transcript binding flaw in MultiField32Challenger allows different transcripts to yield identical challenges.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
CVE
CVE-2026-46654
21 May 202620:24
cve
OSV
GHSA-VJ64-RJF3-W3V7 Plonky3 MultiField32Challenger: transcript malleability and challenge entropy loss
21 May 202620:24
osv
Positive Technologies
PT-2026-42695
21 May 202600:00
ptsecurity
Vulners
Node
p3-challengerRange0.5.00.5.3rust
OR
p3-challengerRange<0.4.3rust

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21 May 2026 20:24Current
5.8Medium risk
Vulners AI Score5.8
4