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CVE-2026-27142

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-27142

Severity

6.1

Medium

CVSS V3

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Summary

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

Description

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.

References

Affected packages

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