High severity7.1NVD Advisory· Published Oct 9, 2023· Updated Jun 17, 2026
CVE-2023-44378
CVE-2023-44378
Description
gnark is a zk-SNARK library that offers a high-level API to design circuits. Prior to version 0.9.0, for some in-circuit values, it is possible to construct two valid decomposition to bits. In addition to the canonical decomposition of a, for small values there exists a second decomposition for a+r (where r is the modulus the values are being reduced by). The second decomposition was possible due to overflowing the field where the values are defined. Upgrading to version 0.9.0 should fix the issue without needing to change the calls to value comparison methods.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/consensys/gnarkGo | < 0.9.0 | 0.9.0 |
Affected products
3Patches
Vulnerability mechanics
References
6- github.com/Consensys/gnark/commit/59a4087261a6c73f13e80d695c17b398c3d0934fnvdPatchWEB
- github.com/Consensys/gnark/security/advisories/GHSA-498w-5j49-vqjgnvdMitigationPatchThird Party AdvisoryWEB
- github.com/advisories/GHSA-498w-5j49-vqjgghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2023-44378ghsaADVISORY
- github.com/Consensys/gnark/pull/835ghsaWEB
- github.com/zkopru-network/zkopru/issues/116nvdNot ApplicableWEB
News mentions
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