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CVE-2026-62335medium6.9

OpenVM's OpenVmHalo2Verifier accepts non-canonical app commitments

Impact

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 accepts appExeCommit and appVmCommit as bytes32 values without checking that either is less than the BN254 scalar field modulus. Although public-value and proof-data lengths are checked, callers can provide non-canonical 256-bit encodings greater than or equal to that modulus at the Solidity wrapper boundary. Applications relying on the wrapper can therefore accept non-canonical app executable and app…

Source excerpt · GitHub_M

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

openvm-org · GitHub_M

openvm

3 ranges
GitHub_M version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

< 1.7.0

>= 2.0.0-alpha, < 2.0.0-rc.3

>= 2.1.0-dev.0, < 2.1.0-preview

unaffected

unknown

Other versions: unknown

Original source 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 accepts appExeCommit and appVmCommit as bytes32 values without checking that either is less than the BN254 scalar field modulus. Although public-value and proof-data lengths are checked, callers can provide non-canonical 256-bit encodings greater than or equal to that modulus at the Solidity wrapper boundary. Applications relying on the wrapper can therefore accept non-canonical app executable and app VM commitments, creating ambiguity between the supplied byte-level values and the field elements used by the verifier. This issue is fixed in versions 1.7.0, 2.0.0-rc.3 and 2.1.0-preview.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-62335

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-20 ↗

CWE-20: Improper Input Validation

GitHub_M

Related →
Contributing organizations · 1
GitHub_M

Assigning organization

2026-10-30

What changed

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Large field values are marked as truncated previews. Original source snapshots remain retained.

References

9 sources
github.com/openvm-org/openvm/security/advisories/GHSA-w82q-w67c-67wv
Security advisoryGitHub_M
github.com/openvm-org/openvm/pull/152
PatchGitHub_M
github.com/openvm-org/openvm/commit/1962276254aabc5420de266a8cb672433ce955ff
PatchGitHub_M
github.com/openvm-org/openvm/blob/v2.0.0-alpha/crates/sdk/contracts/template/OpenVmHalo2Verifier.sol
Source referenceGitHub_M
github.com/openvm-org/openvm/blob/v2.0.0-beta.2/crates/sdk/contracts/template/OpenVmHalo2Verifier.sol
Source referenceGitHub_M
github.com/openvm-org/openvm/blob/v2.1.0-dev.0/crates/sdk/contracts/template/OpenVmHalo2Verifier.sol
Source referenceGitHub_M
View 3 more references
github.com/openvm-org/openvm/releases/tag/v1.7.0
Release notesGitHub_M
github.com/openvm-org/openvm/releases/tag/v2.0.0-rc.3
Release notesGitHub_M
github.com/openvm-org/openvm/releases/tag/v2.1.0-preview
Release notesGitHub_M