CVE-2026-90579

HIGH 7.3

cheshire-cat-ai Cheshire Cat AI custom_auth_handler.py _authorize_http_key missing authentication

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

0th

A vulnerability has been found in cheshire-cat-ai Cheshire Cat AI up to 1.9.2. This affects the function _authorize_http_key of the file core/cat/factory/custom_auth_handler.py. The manipulation of the argument user_id leads to missing authentication. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CWE	CWE-306 CWE-287
Vendor	cheshire-cat-ai
Product	cheshire cat ai
Published	Sep 13, 2026
Last Updated	Sep 14, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

cheshire-cat-ai / Cheshire Cat AI

1.9.0 1.9.1 1.9.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/403164 vuldb.com: https://vuldb.com/vuln/403164/cti vuldb.com: https://vuldb.com/cve/CVE-2026-90579 vuldb.com: https://vuldb.com/submit/913219 github.com: https://github.com/cheshire-cat-ai/core/issues/1137

Credits

🔍 geochen (VulDB User) VulDB CNA Team