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.
CVE-2026-27142
NONE
Updated Mar 06, 2026
Meta
CVE Details
CVE ID
CVE-2026-27142
Published Date
Mar 06, 2026
Vendor
Meta
Severity
NONE
Impact
Minimal impact
Source
View Advisory