CVE-2023-29400

Improper handling of empty HTML attributes in html/template

Description

Templates containing actions in unquoted HTML attributes (e.g. "attr={{.}}") executed with empty input can result in output with unexpected results when parsed due to HTML normalization rules. This may allow injection of arbitrary attributes into tags.

Categories

7.3
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.05%
Vendor Advisory go.dev
Affected: Go standard library html/template
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2023-29400?
CVE-2023-29400 has been scored as a high severity vulnerability.
How to fix CVE-2023-29400?
To fix CVE-2023-29400, 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-2023-29400 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-29400 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-2023-29400?
CVE-2023-29400 affects Go standard library html/template.
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