CVE-2026-82407
Severity not reportedKlever-Go is the Go implementation of the Klever blockchain protocol.
Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, core/kapp/validators/validators.go Register and the runtime validator update path accept a submitted BLSPublicKey without curve, prime-order subgroup, or nonzero validation. When a validator with a malformed key becomes eligible and is selected into a consensus group, MultiSigner.Reset and the corresponding signature verification creation path cannot deserialize the group key and cancel the slot. This causes repeated missed rounds and throughput degradation, and a network whose consensus group equals the eligible validator set can halt completely. Genesis validation is not affected because that path already performs CheckPublicKeyValid. This issue is fixed in version 1.7.20.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/klever-io/klever-go/commit/11606a90ccc289f93d0175994733229b332d9cff security-advisories@github.com
- https://github.com/klever-io/klever-go/commit/642da967893884d635986fed3c43bdc679cbfe8f security-advisories@github.com
- https://github.com/klever-io/klever-go/releases/tag/v1.7.20 security-advisories@github.com
- https://github.com/klever-io/klever-go/security/advisories/GHSA-9wh6-9hq7-9688 security-advisories@github.com
- https://github.com/klever-io/klever-go/security/advisories/GHSA-9wh6-9hq7-9688 134c704f-9b21-4f2e-91b3-4a467353bcc0