CVE-2026-82407

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/klever-io/klever-go/commit/11606a90ccc289f93d0175994733229b332d9cff
https://github.com/klever-io/klever-go/commit/642da967893884d635986fed3c43bdc679cbfe8f
https://github.com/klever-io/klever-go/releases/tag/v1.7.20
https://github.com/klever-io/klever-go/security/advisories/GHSA-9wh6-9hq7-9688
https://github.com/klever-io/klever-go/security/advisories/GHSA-9wh6-9hq7-9688

Configurations

No configuration.

History

23 Sep 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-23 20:17

Updated : 2026-09-23 20:17

NVD link : CVE-2026-82407

Mitre link : CVE-2026-82407

CVE.ORG link : CVE-2026-82407

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

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