Improper Encoding or Escaping of Output Affecting std/html/template package, versions <1.20.8>=1.21.0-0 <1.21.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-STDHTMLTEMPLATE-14548480
- published6 Jan 2026
- disclosed7 Sept 2023
- creditTakeshi Kaneko
Introduced: 7 Sep 2023
CVE-2023-39319 (opens in a new tab)How to fix?
Upgrade std/html/template to version 1.20.8, 1.21.1 or higher.
Overview
std/html/template is a Go standard library package std/html/template
Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output.
Go Vulnerability Report:
The html/template package does not apply the proper rules for handling occurrences of "<script", "<!--", and "</script" within JS literals in