CVE-2026-46654
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.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.9
- CVSS vector
- CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
- EPSS probability
- 0.11%
- CWE
- CWE-1240, CWE-345
- Published
- 2026-06-10
- Last modified
- 2026-06-11
Affected products
- Plonky3 Plonky3
- Plonky3 Plonky3
Weakness type
Related vulnerabilities
- CVE-2025-68833 — HCL Hive is affected by use of a cryptographic primitive with a risky implementation
- CVE-2026-21751 — HCL Hive is affected by use of a cryptographic primitive with a risky implementation
- CVE-2026-50303 — Windows Key Guard Security Feature Bypass Vulnerability
- CVE-2026-44410 — Function Abusement Vulnerability in ZTE ZXUniPOS NDS-LTE
- CVE-2025-64647 — Multiple Vulnerabilities in IBM Concert Software
- CVE-2026-27017 — uTLS has a Chrome Parrot Fingerprint Vulnerability due to GREASE ECH Cipher Suite Mismatch
- CVE-2025-62514 — `libparsec_crypto` does not check for weak order point of curve 25519
- CVE-2026-22705 — RustCrypto: Signatures has timing side-channel in ML-DSA decomposition