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CVE-2023-39318

Published: Sep 8, 2023

Modified: Feb 13, 2025

PUBLISHED

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.

Vendor	Product	Versions
Go standard library	html/template	affected `0 - < 1.20.8` affected `1.21.0-0 - < 1.21.1`

References

https://go.dev/issue/62196

https://go.dev/cl/526156

https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ

https://pkg.go.dev/vuln/GO-2023-2041

https://security.netapp.com/advisory/ntap-20231020-0009/

https://security.gentoo.org/glsa/202311-09

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