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Advisory record · GHSA-3g92-f9ch-qjcm

Plonky3: The sponge construction used to get a hash function from a cryptographic permutation is not collision resistant for inputs of different lengths

CVSS 4.0, no score published

Published by the GitHub Advisory Database at 16 Apr 2026, 22:52 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
p3-symmetriccrates.io<=0.5.2No fixed version yet
Identifiers
GHSA-3g92-f9ch-qjcm
Weakness (CWE)
CWE-328
Tags
Published
16 Apr 2026
Updated
16 Apr 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

p3-symmetric versions up to and including 0.5.2 are affected. PaddingFreeSponge can produce the same hash for inputs of different lengths when the element count is not a multiple of the rate, so an attacker who controls the number of hashed elements can craft collisions. No fixed version is listed; avoid PaddingFreeSponge where an attacker can control input length.

Written 8 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
Not published None 4.0 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 15:18 UTC First seen by agentprime
  2. 31 Oct 2026, 15:18 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.