- 8.7HighCVSS base score
- 0.40%Exploitation in 30 daysEPSS · top 66% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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, `MemoryMerkleAir` does not forbid Merkle expansion rows at `parent_height` = 0 or below while `expand_direction` != 0. A malicious prover can fabricate a subtree below a memory leaf and swap digests inside that subtree to change the committed memory root without a corresponding memory operation. The fraudulent rows still balance against the Merkle and compression buses and require no memory-bus operation for the changed leaf. Because the memory Merkle root binds VM memory state across continuation segment boundaries, this affects the soundness of OpenVM proofs using persistent memory. This issue is fixed in versions 1.7.0, 2.0.0-rc.3 and 2.1.0-preview.
Timeline
ID reserved
By GitHub_M
- 4 months later
· 4 months later
Published
- 6 days later
· 6 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 4.0 | High8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N |
| NVDNVD · Deferred | 4.0 | High8.7 | CVSS:4.0/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 |
- EPSS (exploitation in 30 days)
- 0.40% · top 66% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.7.
Affected products
- affected < 1.7.0
- affected >= 2.0.0-alpha, < 2.0.0-rc.3
- affected >= 2.1.0-dev.0, < 2.1.0-preview
References
9
- https://github.com/openvm-org/openvm/security/advisories/GHSA-396x-v8w4-9x82 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/openvm-org/openvm/pull/148 (opens in a new tab)x_refsource_MISC
- https://github.com/openvm-org/openvm/commit/bb123f6073691bd2b794171c594264c77e45c376 (opens in a new tab)x_refsource_MISC
- https://github.com/openvm-org/openvm/blob/v2.0.0-alpha/crates/vm/src/system/memory/merkle/air.rs (opens in a new tab)x_refsource_MISC
- https://github.com/openvm-org/openvm/blob/v2.0.0-beta.2/crates/vm/src/system/memory/merkle/air.rs (opens in a new tab)x_refsource_MISC
- https://github.com/openvm-org/openvm/blob/v2.1.0-dev.0/crates/vm/src/system/memory/merkle/air.rs (opens in a new tab)x_refsource_MISC
- https://github.com/openvm-org/openvm/releases/tag/v1.7.0 (opens in a new tab)x_refsource_MISC
- https://github.com/openvm-org/openvm/releases/tag/v2.0.0-rc.3 (opens in a new tab)x_refsource_MISC
- https://github.com/openvm-org/openvm/releases/tag/v2.1.0-preview (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-114442 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-62333)Record last updated .