Auth bypass in Dataelement Bisheng
CVE-2026-111363
BISHENG through 3.0.0-beta4 contains an insecure direct object reference vulnerability that allows authenticated low-privileged users to read other users' parsed documents by supplying arbitrary file_id values. Attackers can enumerate sequential file ids against GET /api/v1/knowledge/file_bbox to retrieve extracted page text from other users' and tenants' knowledge bases.
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
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@hieuPenguinnn/bisheng-knowledge-file-bbox-cross-user-idor (third-party-advisory)
- github.com/dataelement/bisheng/blob/v3.0.0-beta4/src/backend/bisheng/knowledge/… (technical-description)
- github.com/dataelement/bisheng/blob/v3.0.0-beta4/src/backend/bisheng/knowledge/… (technical-description)
- github.com/dataelement/bisheng (product)
- www.vulncheck.com/advisories/bisheng-through-3.0.0-beta4-idor-via-api-v1-knowle… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111363?
- CVE-2026-111363 is a medium-severity vulnerability in Dataelement Bisheng, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-10-15.
- How severe is CVE-2026-111363?
- Medium severity. CVSS v3 base score is 6.5 out of 10.