Authorization Bypass in lamp-cloud Vulnerability Allowing File Access
CVE-2026-94533

7.1HIGH

Key Information:

Vendor

Dromara

Status
Lamp-cloud
Vendor
CVE Published:
21 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-94533?

The lamp-cloud product, specifically through version 5.10.0, suffers from an authorization bypass vulnerability in the FileAnyoneController. This flaw permits authenticated users to download arbitrary attachments from other users. By manipulating valid attachment identifiers, attackers can exploit endpoints like /anyone/file/down and /anyone/file/download without proper verification of file ownership, which exposes sensitive data stored by other users. This vulnerability highlights critical weaknesses in access control measures within the application.

Affected Version(s)

lamp-cloud 0 <= 5.10.0

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-2026-94533 - Proof of Concept

References

https://github.com/LinYuanyi1/cve-request-poc/blob/master...
exploit
https://github.com/dromara/lamp-cloud/blob/bdc1a406eb0f62...
technical-description
https://github.com/dromara/lamp-cloud
product

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

Mingsheng Lin
.