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

medium Tenable Cloud Security Plugin ID 445965

Description

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

 - Previously, pathological inputs could close an unescaped '/' early, allowing for attack-controlled data to
 inject arbitrary content, potentially leading to XSS. (CVE-2026-56858)

Solution

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

See Also

https://pkg.go.dev/vuln/GO-2026-6091

Plugin Details

Severity: Medium

ID: 445965

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: 2.3

Percentile: 9.74

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2026-56858

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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-2026-56858