7.3

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2023-29400

CVE-2023-29400: Templates containing actions in unquoted HTML attributes (e.g. "attr={{.}}") executed with empty...

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.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2023-29400

CVE-2023-29400:

7.3

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Vulnerability Intelligence
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Root Cause Analysis

The vulnerable functions were identified primarily from the Go project's official vulnerability report (GO-2023-1753) and the security announcement for Go 1.20.4 and 1.19.9. These sources explicitly list 'html/template.Template.Execute' and 'html/template.Template.ExecuteTemplate' as the affected symbols (functions/methods). The vulnerability description clearly states that the issue arises when templates with actions in unquoted HTML attributes are executed with empty input. These two functions are the public API methods responsible for executing templates in the 'html/template' package. Attempts to fetch the specific commit diff for CL 491617 (commit SHA 29f78f1649308367d8058045474c30995f5dd985) using the get_commit_infos tool were unsuccessful. Despite the inability to inspect the patch directly through the tool, the official advisories provide strong evidence for identifying these functions as vulnerable. The file path 'src/html/template/template.go' is the standard location for these functions in the Go source tree.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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