Auth bypass in Cheshire-Cat-Ai Core
CVE-2026-85093
Cheshire Cat AI's GET /memory/collections/{collection_id}/points endpoint fails to apply per-user filtering when retrieving episodic memory points. Authenticated attackers with MEMORY:READ permission can retrieve all users' stored conversation messages and personal data by paginating through the collection using the offset cursor.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/cheshire-cat-ai/core (product)
- github.com/cheshire-cat-ai/core/blob/1.9.2/core/cat/looking_glass/stray_cat.py (technical-description)
- github.com/cheshire-cat-ai/core/blob/1.9.2/core/cat/routes/memory/points.py (technical-description)
- GitHub Issue #1136 (issue-tracking)
- VulnCheck Advisory: Cheshire Cat AI Memory Collection Endpoint Information Disclosure (third-party-advisory)
Frequently asked questions
- What is CVE-2026-85093?
- CVE-2026-85093 is a medium-severity vulnerability in Cheshire-Cat-Ai Core, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-09-03.
- How severe is CVE-2026-85093?
- Medium severity. CVSS v3 base score is 6.5 out of 10.