CVE-2023-39318

MediumCVSS 6.1/10Last modified Jun 17, 2026

Description

The html/template package does not properly handle HTML-like "" comment tokens, nor hashbang "#!" comment tokens, in <script> contexts. This may cause the template parser to improperly interpret the contents of <script> contexts, causing actions to be improperly escaped. This may be leveraged to perform an XSS attack.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

Vendor	Product	Versions
Go standard library	html/template	< 1.20.8; >= 1.21.0-0, < 1.21.1

References

https://go.dev/cl/526156Patch
https://go.dev/issue/62196Issue Tracking
https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJMailing List, Release Notes
https://pkg.go.dev/vuln/GO-2023-2041Vendor Advisory
https://security.gentoo.org/glsa/202311-09
https://security.netapp.com/advisory/ntap-20231020-0009/Third Party Advisory
https://go.dev/cl/526156Patch
https://go.dev/issue/62196Issue Tracking
https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJMailing List, Release Notes
https://pkg.go.dev/vuln/GO-2023-2041Vendor Advisory
https://security.gentoo.org/glsa/202311-09
https://security.netapp.com/advisory/ntap-20231020-0009/Third Party Advisory

Timeline

Published: Sep 8, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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