What is CVE-2026-49343?

CVE-2026-49343 is a medium-severity vulnerability in Klever-io Klever-go, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2026-08-07.

How severe is CVE-2026-49343?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Resource exhaustion in Klever-io Klever-go

CVE-2026-49343

Klever-Go is the Go implementation of the Klever blockchain protocol. In versions prior to 1.7.18, the account-data trie syncers are vulnerable to a resource-exhaustion flaw that leaks bounded throttler slots on error paths. In syncDataTri…

Vulnerability class: DoS (Denial of Service)

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/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
CWE-772 — Missing Release of Resource after Effective Lifetime

References

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

Frequently asked questions

What is CVE-2026-49343?: CVE-2026-49343 is a medium-severity vulnerability in Klever-io Klever-go, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2026-08-07.
How severe is CVE-2026-49343?: Medium severity. CVSS v3 base score is 5.9 out of 10.