Auth bypass in Ottermind Chat2db
CVE-2026-63307
Chat2DB before 5.3.0 contains an insecure direct object reference vulnerability in the GET /api/connection/datasource/{id} endpoint. The handler calls dataSourceService.queryExistent(id, ...) without an ownership check and returns the decrypted password field, allowing any authenticated non-admin user to enumerate datasource IDs and read the plaintext database credentials of datasources owned by other users.
Vulnerability class: IDOR (Insecure Direct Object Reference)
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 (33.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Ottermind Chat2db — versions 0
Weakness classification (CWE)
References
- github.com/OtterMind/Chat2DB/issues/1839 (technical-description)
- github.com/OtterMind/Chat2DB/releases/tag/v5.3.0 (release-notes)
- www.vulncheck.com/advisories/forgecode-arbitrary-code-execution-via-unvetted-mc… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-63307?
- CVE-2026-63307 is a medium-severity vulnerability in Ottermind Chat2db, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-07-17.
- How severe is CVE-2026-63307?
- Medium severity. CVSS v3 base score is 6.5 out of 10.