What is CVE-2026-47249?

CVE-2026-47249 is a high-severity vulnerability in Klever-io Klever-go, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-08-07.

How severe is CVE-2026-47249?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Klever-io Klever-go

CVE-2026-47249

Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.18, the P2P resolver request handling logic is vulnerable to hash-array amplification. A connected peer can send a compressed RequestDataType_HashArrayType…

Vulnerability class: DoS (Denial of Service)

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:N/A:H.

Affected products

Klever-io Klever-go — versions < 1.7.18

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-47249?: CVE-2026-47249 is a high-severity vulnerability in Klever-io Klever-go, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-08-07.
How severe is CVE-2026-47249?: High severity. CVSS v3 base score is 7.5 out of 10.