Improper input validation in Openvm
CVE-2026-46669
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (29.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Openvm
- Openvm-Org Openvm — versions < 1.6.0
Weakness classification (CWE)
References
- github.com/openvm-org/openvm/releases/tag/v1.6.0 (Product, Release Notes)
- github.com/openvm-org/openvm/security/advisories/GHSA-76mq-v757-53gr (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-46669?
- CVE-2026-46669 is a high-severity vulnerability in Openvm, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-06-10.
- How severe is CVE-2026-46669?
- High severity. CVSS v3 base score is 7.5 out of 10.