GO-2026-4603

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Source

https://pkg.go.dev/vuln/GO-2026-4603

Import Source

https://vuln.go.dev/ID/GO-2026-4603.json

JSON Data

https://api.osv.dev/v1/vulns/GO-2026-4603

Aliases

BIT-golang-2026-27142
CVE-2026-27142

Related

CGA-g36f-884r-6gj3

Published

2026-03-06T21:03:42Z

Modified

2026-03-10T10:43:54.330461Z

Summary

URLs in meta content attribute actions are not escaped in html/template

Details

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.

Database specific

{
    "review_status": "REVIEWED",
    "url": "https://pkg.go.dev/vuln/GO-2026-4603"
}

References

Affected packages

Go / stdlib

Package

Name: stdlib; View open source insights on deps.dev
Purl: pkg:golang/stdlib

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.25.8

Introduced

1.26.0-0

Fixed

1.26.1

Ecosystem specific

{
    "imports": [
        {
            "symbols": [
                "Template.Execute",
                "Template.ExecuteTemplate",
                "escaper.escapeAction",
                "tTag"
            ],
            "path": "html/template"
        }
    ]
}

Database specific

source

"https://vuln.go.dev/ID/GO-2026-4603.json"