Detections
Analytics

Golang 1.25.x < 1.25.10 / 1.26.x < 1.26.3 Multiple Vulnerabilities

medium Nessus Plugin ID 314962

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Synopsis

An application installed on the remote host is affected by multiple vulnerabilities.

Description

The version of Golang running on the remote host is 1.25.x prior to 1.25.10, or 1.26.x prior to 1.26.3. It is, therefore, affected by multiple vulnerabilities, including:

- The net package's LookupCNAME function could trigger a double-free crash when using the cgo DNS resolver with very long CNAME responses. (CVE-2026-33811)

- A symlink-handling flaw in the `go bug` command could allow an attacker to overwrite files in the system temporary directory. (CVE-2026-39819)

 - Additional flaws affecting net, net/mail, and html/template that could be abused for denial of service or incorrect output escaping. (CVE-2026-39836, CVE-2026-42499, CVE-2026-39820, CVE-2026-39826) Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Golang Go version 1.25.10, 1.26.3 or later.

See Also

http://www.nessus.org/u?5939a267

Plugin Details

Severity: Medium

ID: 314962

File Name: golang_1_25_10_1_26_3.nasl

Version: 1.2

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 5/15/2026

Updated: 5/18/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-2026-33811

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

CVSS Score Source: CVE-2026-39817

Vulnerability Information

CPE: cpe:/a:golang:go

Required KB Items: installed_sw/Golang Go Programming Language

Exploit Ease: No known exploits are available

Patch Publication Date: 5/7/2026

Vulnerability Publication Date: 5/7/2026

Reference Information

CVE: CVE-2026-33811, CVE-2026-33814, CVE-2026-39817, CVE-2026-39819, CVE-2026-39820, CVE-2026-39825, CVE-2026-39826, CVE-2026-39836, CVE-2026-42499, CVE-2026-42501