Golang: stdlib: security update to 1.26.9stdlib: security update to 1.27.2

high Tenable Self-Hosted Container Security Plugin ID 473917

Description

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

- When an HTTP server handler sends a 2xx response to an HTTP/1 CONNECT request and returns without
hijacking the connection, the server improperly continues to read and serve requests from the connection.
Since a 2xx response to an HTTP/1 CONNECT converts the connection into a tunnel, the server should not
treat the connection as continuing to contain HTTP. The impact of this misbehavior is mostly limited to
potential request smuggling, where an intermediate proxy considers the data on the connection to be
tunneled and the server considers it to be HTTP. (CVE-2026-94439)

Solution

Update the stdlib library and its related packages to version 1.26.9 or later.

Plugin Details

Severity: High

ID: 473917

Version: Revision 1.1

Type: Local

Family: Golang

Published: 10/9/2026

Updated: 10/9/2026

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-94439

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:H/I:N/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: 10/8/2026

Vulnerability Publication Date: 10/8/2026

Reference Information

CVE: CVE-2026-94439

Detections

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