Actions which insert URLs into the content attribute of HTML meta tags are not escaped.

Code

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No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Mar 6, 2026 · NIST NVD

   Detected

   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.

2. Jun 17, 2026 · NIST NVD

   Updated

   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.

Affected

• cpe golang/goversion unspecified
• cpe golang/go1.26.0

Sources

• NIST NVDVulnerability recordCVE-2026-27142

  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 escap

  nvd.nist.gov

References

• Mailing List · go.dev
• Issue Tracking · go.dev
• Release Notes · groups.google.com
• Vendor Advisory · pkg.go.dev