CVE-2023-39318

Improper handling of HTML-like comments in script contexts in html/template

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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.06%
Vendor Advisory go.dev
Affected: Go standard library html/template
Published at:
Updated at:

References

Link Tags
https://go.dev/issue/62196 issue tracking
https://go.dev/cl/526156 patch
https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ release notes mailing list
https://pkg.go.dev/vuln/GO-2023-2041 vendor advisory
https://security.netapp.com/advisory/ntap-20231020-0009/ third party advisory
https://security.gentoo.org/glsa/202311-09

Frequently Asked Questions

What is the severity of CVE-2023-39318?
CVE-2023-39318 has been scored as a medium severity vulnerability.
How to fix CVE-2023-39318?
To fix CVE-2023-39318, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-39318 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-39318 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-39318?
CVE-2023-39318 affects Go standard library html/template.
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