CVE-2026-67179

Genkit improper host header validation

State: Published
Severity: 7.8 High
Published: Aug 11, 2026
Updated: Aug 17, 2026
Reserved: Jul 28, 2026

Description

Genkit does not properly validate host request headers. Any host on the developer's network, and any website the developer visits (via DNS rebinding), can reach POST /api/runAction on the Dev UI server (default port 4000) and execute any registered Genkit action and read the result. Fixed on 2026-06-18.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	cisa-cg

Weaknesses

CWE-644 Improper Neutralization of HTTP Headers for Scripting Syntax

Affected Products

Product	Versions
genkitgenkit-ai	before 2026-06-18Affected 2026-06-18Not affected

References

urlissue-tracking
urlpatch
urlvdb-entry
urlthird-party-advisory

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