CVE-2026-42506

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://go.dev/cl/781700	Issue Tracking
https://go.dev/issue/79571	Issue Tracking
https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8	Mailing List
https://pkg.go.dev/vuln/GO-2026-5025	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:golang:net:*:*:*:*:*:go:*:*

History

29 May 2026, 19:06

Type	Values Removed	Values Added
CPE		cpe:2.3:a:golang:net::::::go::*
References	~~() https://go.dev/cl/781700 -~~	() https://go.dev/cl/781700 - Issue Tracking
References	~~() https://go.dev/issue/79571 -~~	() https://go.dev/issue/79571 - Issue Tracking
References	~~() https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8 -~~	() https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8 - Mailing List
References	~~() https://pkg.go.dev/vuln/GO-2026-5025 -~~	() https://pkg.go.dev/vuln/GO-2026-5025 - Vendor Advisory
CWE		CWE-79
First Time		Golang net Golang

22 May 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-22 16:16

Updated : 2026-06-17 10:47

NVD link : CVE-2026-42506

Mitre link : CVE-2026-42506

CVE.ORG link : CVE-2026-42506

JSON object : View

Products Affected

golang

net

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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