CVE-2026-27142

Actions which insert URLs into the content attribute of HTML meta tags are not escaped. This can allow XSS if the meta tag also has an http-equiv attribute with the value "refresh". A new GODEBUG setting has been added, htmlmetacontenturlescape, which can be used to disable escaping URLs in actions in the meta content attribute which follow "url=" by setting htmlmetacontenturlescape=0.

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/752081	Mailing List
https://go.dev/issue/77954	Issue Tracking
https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk	Release Notes
https://pkg.go.dev/vuln/GO-2026-4603	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:golang:go::::::::
	cpe:2.3:a:golang:go:1.26.0:::::::*

History

No history.

Information

Published : 2026-03-06 22:16

Updated : 2026-06-17 10:26

NVD link : CVE-2026-27142

Mitre link : CVE-2026-27142

CVE.ORG link : CVE-2026-27142

JSON object : View

Products Affected

golang

go

CWE

CWE-79

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

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