Auth bypass in Dromara Lamp-Cloud
CVE-2026-109166
lamp-cloud through 5.10.1 contains an insecure direct object reference vulnerability that allows authenticated users to obtain storage URLs for other users' files by supplying arbitrary file ids. Attackers can send another user's file ids to the findUrlById handler of FileAnyoneController, which never checks ownership, to retrieve access URLs and read uploaded attachments.
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
- github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b… (exploit)
- github.com/dromara/lamp-cloud/blob/d61184d7d402023fc3ea63b6bdbd7a1bfdb8ce92/lam… (technical-description)
- github.com/dromara/lamp-cloud/blob/d61184d7d402023fc3ea63b6bdbd7a1bfdb8ce92/lam… (technical-description)
- www.vulncheck.com/advisories/lamp-cloud-through-5.10.1-idor-via-anyone-file-fin… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109166?
- CVE-2026-109166 is a medium-severity vulnerability in Dromara Lamp-Cloud, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-10-12.
- How severe is CVE-2026-109166?
- Medium severity. CVSS v3 base score is 6.5 out of 10.