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.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Go standard library | html/template | unaffected |
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Advisories
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Fixes
Solution
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Workaround
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References
History
Fri, 06 Mar 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | URLs in meta content attribute actions are not escaped in html/template | |
| References |
|
Projects
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MITRE
Status: PUBLISHED
Assigner: Go
Published:
Updated: 2026-03-06T21:28:14.674Z
Reserved: 2026-02-17T19:57:28.435Z
Link: CVE-2026-27142
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-03-06T22:16:01.177
Modified: 2026-03-06T22:16:01.177
Link: CVE-2026-27142
Redhat
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OpenCVE Enrichment
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Weaknesses
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