CVE-2026-82407
- Source
- https://cve.org/CVERecord?id=CVE-2026-82407
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82407.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-82407
- Aliases
- Published
- 2026-09-23T19:17:59Z
- Modified
- 2026-10-28T02:30:39Z
- Severity
-
- 7.0 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H CVSS Calculator
- Summary
- Klever-Go: Validator registration accepts an unvalidated BLS public key → consensus liveness DoS
- Details
-
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.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-20" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82407.json" }- References
-
- https://github.com/klever-io/klever-go/releases/tag/v1.7.20
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82407.json
- https://github.com/klever-io/klever-go/security/advisories/GHSA-9wh6-9hq7-9688
- https://nvd.nist.gov/vuln/detail/CVE-2026-82407
- https://github.com/klever-io/klever-go/commit/11606a90ccc289f93d0175994733229b332d9cff
- https://github.com/klever-io/klever-go/commit/642da967893884d635986fed3c43bdc679cbfe8f
Affected packages
Git / github.com/klever-io/klever-go
Affected ranges
- Type
- GIT
- Repo
- https://github.com/klever-io/klever-go
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "1.7.20" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "11606a90ccc289f93d0175994733229b332d9cff" } ], "source": "REFERENCES_COMMIT" }, { "range": [ { "fixed": "642da967893884d635986fed3c43bdc679cbfe8f" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v1.7.20", "range": [ { "fixed": "0b70b0f1a1f5d95ac07c2038c227db7f18976a2a" } ], "source": "REFERENCES_TAG" } ] }