What’s Vulnerable › Vulnerabilities

CVE-2026-46669: `openvm-pairing` pairing check missing proper subfield check on scaling factor

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-10 · updated 2026-07-23
• Weakness: CWE-20

Description

OpenVM is a performant and modular zkVM framework built for customization and extensibility. Prior to version 1.6.0, the openvm-pairing guest library's try_honest_pairing_check function invokes Theorem 3 of https://eprint.iacr.org/2024/640.pdf but does not check that the scaling factor s is in a proper subfield of Fp12. This allows incorrect results to the pairing check. This issue has been patched in version 1.6.0.

Affected products

• openvm-org openvm: before 1.6.0 — fixed in 1.6.0

How to fix

Upgrade to a fixed version: openvm-org openvm 1.6.0. Check the vendor advisory for mitigations.

References

• https://github.com/openvm-org/openvm/releases/tag/v1.6.0
• https://github.com/openvm-org/openvm/security/advisories/GHSA-76mq-v757-53gr
• https://github.com/openvm-org/openvm/security/advisories/GHSA-76mq-v757-53gr

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