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SCA: security update for github.com/klever-io/klever-go (GHSA-rm5c-5x2p-48wr)

high Tenable Cloud Security Plugin ID 442846

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Klever-Go is the Go implementation of the Klever blockchain protocol. Versions 1.7.14 through 1.7.17 are
 vulnerable to a nil-pointer panic triggered by a protobuf Transaction whose embedded RawData sub-message
 is omitted. This omission causes RawData to decode to nil. Every transaction gossiped on the Klever-Go P2P
 network is decoded and validated synchronously inside the libp2p pubsub topic-validator callback, where
 txVersionChecker.CheckTxVersion dereferences tx.RawData.Version with no nil check. Because the libp2p
 pubsub callback, the underlying go-libp2p-pubsub validation worker, and Klever's own network/p2p layer
 install no recover(), the panic propagates and crashes the entire node process. The attacker payload is a
 3-byte protobuf message; no validator key, stake, funds, or on-chain account is required, and delivery
 aimed at enough of the BLS validator set can halt block production, resulting in a chain halt. This issue
 has been fixed in version 1.7.18. (CVE-2026-52878)

Solution

Update the github.com/klever-io/klever-go library and its related packages to version 1.7.18 or later.

See Also

https://github.com/advisories/GHSA-rm5c-5x2p-48wr

Plugin Details

Severity: High

ID: 442846

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 6/9/2026

Updated: 8/10/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.76

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-52878

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/5/2026

Vulnerability Publication Date: 6/5/2026

Reference Information

CVE: CVE-2026-52878

cwe: CWE-476