GO-2023-1751

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Source

https://pkg.go.dev/vuln/GO-2023-1751

Import Source

https://vuln.go.dev/ID/GO-2023-1751.json

JSON Data

https://api.osv.dev/v1/vulns/GO-2023-1751

Aliases

Published

2023-05-05T21:10:20Z

Modified

2024-05-20T16:03:47Z

Summary

Improper sanitization of CSS values in html/template

Details

Angle brackets (<>) are not considered dangerous characters when inserted into CSS contexts. Templates containing multiple actions separated by a '/' character can result in unexpectedly closing the CSS context and allowing for injection of unexpected HTML, if executed with untrusted input.

References

Credits

- Juho Nurminen of Mattermost

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

1.19.9

Introduced

1.20.0-0

Fixed

1.20.4

Ecosystem specific

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