medium
6.1
CWE
79
Advisory Published
CVE Published
Updated

CVE-2023-39319: Improper handling of special tags within script contexts in html/template

First published: Wed Sep 06 2023(Updated: )

Golang Go is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the html/template package. A remote attacker could exploit this vulnerability using a specially crafted URL to execute script in a victim's Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials.

Credit: security@golang.org security@golang.org security@golang.org

Affected SoftwareAffected VersionHow to fix
Golang Go<1.20.8
Golang Go>=1.21.0<1.21.1
redhat/golang<1.20.8
1.20.8
redhat/golang<1.21.1
1.21.1
debian/golang-1.15<=1.15.15-1~deb11u4
debian/golang-1.19<=1.19.8-2
IBM Concert Software<=1.0.0 - 1.0.1

Remedy

https://go.dev/cl/526157

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2023-39319.

  • What is the severity of CVE-2023-39319?

    The severity of CVE-2023-39319 is medium with a CVSS score of 6.1.

  • Which software is affected by CVE-2023-39319?

    Golang Go versions up to 1.20.8 and versions between 1.21.0 and 1.21.1 are affected by CVE-2023-39319.

  • How does CVE-2023-39319 affect the html/template package?

    CVE-2023-39319 affects the html/template package by improperly handling occurrences of "<script", "<!--", and "</script" within JS literals in <script> contexts, causing actions to be improperly escaped.

  • How can I fix CVE-2023-39319?

    To fix CVE-2023-39319, it is recommended to update Golang Go to versions 1.20.8 or 1.21.2 or later.

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