CVE-2026-62334：OpenVM OpenVmHalo2Verifier 允許繞過證明驗證
CVE-2026-62334 - OpenVM's OpenVmHalo2Verifier self-call can bypass proof verification
OpenVM 的 OpenVmHalo2Verifier 在 1.x 1.7.0 之前及 2.0、2.1 先行版中存在漏洞，允許攻擊者繞過 zkVM 證明驗證，導致任意承諾與公開值被接受。
此漏洞可讓攻擊者繞過 OpenVmHalo2Verifier 的證明驗證，導致任意承諾被接受。
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.
Impact
Affected Products
The following products are affected by CVE-2026-62334
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
| ID | Vendor | Product | Action |
|---|---|---|---|
| 1 | Openvm | openvm |
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | [email protected] |
Update OpenVmHalo2Verifier to a fixed version to prevent arbitrary commitment acceptance.
- Update OpenVmHalo2Verifier to version 1.7.0 or later.
- Update to version 2.0.0-rc.3 or later.
- Update to version 2.1.0-preview or later.
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CVE-2026-62334.
While CVE identifies
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approaches employed by adversaries to exploit the CVE-2026-62334
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following table lists the changes that have been made to the
CVE-2026-62334 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
十月. 30, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-754 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/62xxx/CVE-2026-62334.json">CVE-2026-62334</a> Added Reference https://github.com/openvm-org/openvm/blob/v2.0.0-alpha/crates/sdk/contracts/template/OpenVmHalo2Verifier.sol Added Reference https://github.com/openvm-org/openvm/blob/v2.0.0-beta.2/crates/sdk/contracts/template/OpenVmHalo2Verifier.sol Added Reference https://github.com/openvm-org/openvm/blob/v2.1.0-dev.0/crates/sdk/contracts/template/OpenVmHalo2Verifier.sol Added Reference https://github.com/openvm-org/openvm/commit/751bdb1725254c3268782ddf8df89f19035666e3 Added Reference https://github.com/openvm-org/openvm/pull/151 Added Reference https://github.com/openvm-org/openvm/releases/tag/v1.7.0 Added Reference https://github.com/openvm-org/openvm/releases/tag/v2.0.0-rc.3 Added Reference https://github.com/openvm-org/openvm/releases/tag/v2.1.0-preview Added Reference https://github.com/openvm-org/openvm/security/advisories/GHSA-j29p-wr24-hp4f
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.