Insecure Direct Object Reference Vulnerability in lamp-cloud by Dromara
CVE-2026-109166

7.1HIGH

Key Information:

Vendor

Dromara

Status
Lamp-cloud
Vendor
CVE Published:
12 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-109166?

The lamp-cloud application, particularly versions up to 5.10.1, suffers from an insecure direct object reference vulnerability. This issue enables authenticated users to exploit the findUrlById handler within the FileAnyoneController. By supplying arbitrary file IDs, attackers can retrieve storage URLs of files owned by other users, as there is no ownership verification in place. This flaw poses a significant risk, allowing unauthorized access to sensitive attachments, which could lead to privacy breaches and data leaks.

Affected Version(s)

lamp-cloud 0 <= 5.10.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-109166 - Proof of Concept

References

https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1...
exploit
https://github.com/dromara/lamp-cloud/blob/d61184d7d40202...
technical-description
https://github.com/dromara/lamp-cloud/blob/d61184d7d40202...
technical-description

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Yaqi Chao
.