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CVE-2023-29400

HIGH severity · CVSS 7.3 · Injection
7.3CVSS HIGH

Summary

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.

Impact & exploitability

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactLow
Integrity impactLow
Availability impactLow
Exploit probability (EPSS)0%

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected products we track (1)

Go

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://go.dev/cl/491617 ↗

Last checked: Wed, 10 Jun 2026 22:18:30 UTC