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CVE-2026-67179 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian GovernmentCVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/genkit-ai/genkit/issues/5581	Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government
https://github.com/genkit-ai/genkit/pull/5587	Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-223-01.json	Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government
https://www.cve.org/CVERecord?id=CVE-2026-67179	Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-644	Improper Neutralization of HTTP Headers for Scripting Syntax	Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Aug 17, 2026	CVE Modified	CISA-ADP
Aug 11, 2026	New CVE Received	Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government