{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46654","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-15T20:11:54.585Z","datePublished":"2026-06-10T20:06:10.554Z","dateUpdated":"2026-06-11T14:01:57.462Z"},"containers":{"cna":{"title":"Plonky3 MultiField32Challenger: transcript malleability and challenge entropy loss","problemTypes":[{"descriptions":[{"cweId":"CWE-1240","lang":"en","description":"CWE-1240: Use of a Cryptographic Primitive with a Risky Implementation","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-345","lang":"en","description":"CWE-345: Insufficient Verification of Data Authenticity","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","baseScore":8.9,"baseSeverity":"HIGH","vectorString":"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","version":"4.0"}}],"references":[{"name":"https://github.com/Plonky3/Plonky3/security/advisories/GHSA-vj64-rjf3-w3v7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Plonky3/Plonky3/security/advisories/GHSA-vj64-rjf3-w3v7"}],"affected":[{"vendor":"Plonky3","product":"Plonky3","versions":[{"version":"< 0.4.3","status":"affected"},{"version":">= 0.5.0, < 0.5.3","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-06-10T20:06:10.554Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-vj64-rjf3-w3v7","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-11T14:01:33.851648Z","id":"CVE-2026-46654","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-11T14:01:57.462Z"}}]}}