CVE-2023-29453

CVSS 3.1 Score 9.8 of 10 (high)

Details

Published Oct 12, 2023
Updated: Oct 24, 2023
CWE ID 94

Summary

CVE-2023-29453 introduces a vulnerability in templates where backticks, used as Javascript string delimiters, are not properly handled. Go template actions within Javascript template literals can cause the literal to be terminated, allowing the injection of arbitrary Javascript code. Due to the complexity of ES6 template literals and their interpolation capabilities, Go has decided to disallow Go template actions from being used inside of them. This change will result in an Error being returned by Template.Parse when such templates are encountered, starting with the release of Go 1.21. Users who require the previous behavior can enable it using the GODEBUG flag jstmpllitinterp=1, but are advised to exercise caution.

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