CVE-2026-62334
Vulnerability Scoring
Analysis In Progress
CVE-2026-62334 Vulnerability Analysis & Exploit Details
CVE-2026-62334
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2026-62334 Details
Status: Received on 30 Oct 2026, 20:17 UTC
Published on: 30 Oct 2026, 20:17 UTC
CVSS Release:
CVE-2026-62334 Vulnerability Summary
CVE-2026-62334: 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.
Assessing the Risk of CVE-2026-62334
Access Complexity Graph
The exploitability of CVE-2026-62334 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2026-62334
No exploitability data is available for CVE-2026-62334.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2026-62334, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2026-62334, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2026-62334 does not compromise confidentiality.
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Integrity:
None
CVE-2026-62334 does not impact data integrity.
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Availability:
None
CVE-2026-62334 does not affect system availability.
CVE-2026-62334 References
External References
- https://github.com/openvm-org/openvm/blob/v2.0.0-alpha/crates/sdk/contracts/template/OpenVmHalo2Verifier.sol
- https://github.com/openvm-org/openvm/blob/v2.0.0-beta.2/crates/sdk/contracts/template/OpenVmHalo2Verifier.sol
- https://github.com/openvm-org/openvm/blob/v2.1.0-dev.0/crates/sdk/contracts/template/OpenVmHalo2Verifier.sol
- https://github.com/openvm-org/openvm/commit/751bdb1725254c3268782ddf8df89f19035666e3
- 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
CWE Common Weakness Enumeration
CWE-754Protect Your Infrastructure against CVE-2026-62334: Combat Critical CVE Threats
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