What’s Vulnerable › Vulnerabilities

CVE-2026-90579: cheshire-cat-ai Cheshire Cat AI custom_auth_handler.py _authorize_http_key missing authentication

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-13 · updated 2026-09-14
• Weakness: CWE-287

Description

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.

Affected products

• cheshire-cat-ai Cheshire Cat AI: 1.9.0, 1.9.1, 1.9.2

References

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

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