Detections
Analytics

SCA: security update for msgpack5 (GHSA-26wq-p25c-j6fv)

medium Tenable Cloud Security Plugin ID 473902

Description

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

 - msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the streaming decoder
 treats the reserved MessagePack byte 0xc1 as incomplete input instead of invalid input. When 0xc1 begins a
 stream, subsequent data remains buffered while the decoder waits for bytes that cannot make the value
 valid, allowing a remote peer to exhaust memory. This issue is fixed in version 6.1.0. (CVE-2026-107299)

Solution

Update the msgpack5 library and its related packages to version 6.1.0 or later.

See Also

https://github.com/advisories/GHSA-26wq-p25c-j6fv

Plugin Details

Severity: Medium

ID: 473902

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/8/2026

Updated: 10/8/2026

Risk Information

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4

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

CVSS Score Source: CVE-2026-107299

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

Vector: CVSS:3.0/AV:N/AC:H/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: 10/8/2026

Vulnerability Publication Date: 10/8/2026

Reference Information

CVE: CVE-2026-107299

cwe: CWE-228