Unauthorized Access Vulnerability in lamp-cloud by dromara
CVE-2026-91996

8.7HIGH

Key Information:

Vendor

Dromara

Status
Lamp-cloud
Vendor
CVE Published:
15 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-91996?

The lamp-cloud product up to version 5.10.0 has a significant security flaw that permits unauthenticated attackers to gain access to sensitive information. This vulnerability arises from a misconfigured path pattern that allows access to the server's JVM system property map via the endpoint /defGenProject/anno/getProperties. Through crafted POST requests, attackers can retrieve critical data such as JVM classpath settings, filesystem directories, operating system details, and startup secrets, potentially compromising the integrity and confidentiality of the affected systems.

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-2026-91996 - Proof of Concept

References

https://github.com/geo-chen/oss/blob/main/lamp-cloud.md
third-party-advisoryexploit
https://github.com/dromara/lamp-cloud/blob/bdc1a406eb0f62...
technical-description
https://github.com/dromara/lamp-cloud/blob/bdc1a406eb0f62...
technical-description

CVSS V4

Score:
8.7
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

George Chen
.