Detections
Analytics

Golang: stdlib: security update to 1.25.13stdlib: security update to 1.26.6stdlib: security update to 1.27.0-rc.3

high Tenable Cloud Security Plugin ID 445966

Description

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

 - Handshake messages, such as KeyUpdate, are always considered as state-advancing, regardless of whether a
 handshake has been completed or not. As a result, a malicious client can keep sending KeyUpdate messages
 to force the server to keep performing key derivation operations indefinitely. (CVE-2026-56862)

Solution

Update the stdlib library and its related packages to version 1.25.13 or later.

See Also

https://pkg.go.dev/vuln/GO-2026-6090

Plugin Details

Severity: High

ID: 445966

Version: Revision 1.2

Type: Local

Family: Golang

Published: 8/14/2026

Updated: 8/14/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2026-56862

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:H/A:N

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 8/13/2026

Vulnerability Publication Date: 8/13/2026

Reference Information

CVE: CVE-2026-56862