Vulnerability Description
OpenVM is a performant and modular zkVM framework built for customization and extensibility. Before 1.7.0 in the 1.x line and in affected 2.0 and 2.1 prereleases, `OpenVmHalo2Verifier.verify` constructs raw proof calldata from user-controlled `proofData`, performs a `staticcall` to `address(this)`, and treats a successful call as proof acceptance. If the first four proof bytes match another external selector exposed by the wrapper, dispatch can invoke a successful non-verifier function instead of the generated Halo2 fallback verifier. Applications using the generated Solidity wrapper can consequently accept arbitrary app commitments and public values without checking the proof suffix, accumulator, app commitments or public values. This issue is fixed in versions 1.7.0, 2.0.0-rc.3 and 2.1.0-preview.
Related Weaknesses (CWE)
References
- https://github.com/openvm-org/openvm/blob/v2.0.0-alpha/crates/sdk/contracts/temp
- https://github.com/openvm-org/openvm/blob/v2.0.0-beta.2/crates/sdk/contracts/tem
- https://github.com/openvm-org/openvm/blob/v2.1.0-dev.0/crates/sdk/contracts/temp
- https://github.com/openvm-org/openvm/commit/751bdb1725254c3268782ddf8df89f190356
- https://github.com/openvm-org/openvm/pull/151
- https://github.com/openvm-org/openvm/releases/tag/v1.7.0
- https://github.com/openvm-org/openvm/releases/tag/v2.0.0-rc.3
- https://github.com/openvm-org/openvm/releases/tag/v2.1.0-preview
- https://github.com/openvm-org/openvm/security/advisories/GHSA-j29p-wr24-hp4f
FAQ
What is CVE-2026-62334?
CVE-2026-62334 is a documented vulnerability. OpenVM is a performant and modular zkVM framework built for customization and extensibility. Before 1.7.0 in the 1.x line and in affected 2.0 and 2.1 prereleases, `OpenVmHalo2Verifier.verify` construc...
How severe is CVE-2026-62334?
CVSS scoring is not yet available for CVE-2026-62334. Check NVD for updates.
Is there a patch for CVE-2026-62334?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.