Access Control Vulnerability in Rainbond by Goodrain
CVE-2026-72741

8.6HIGH

Key Information:

Vendor

Goodrain

Status
Rainbond
Vendor
CVE Published:
13 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-72741?

The Rainbond platform, through version 6.9.7, is susceptible to a broken access control vulnerability within its CheckToken function. This flaw permits authenticated attackers to exploit the system by modifying the tenant name within URL paths to access unauthorized enterprise resources. By leveraging any valid API token, these attackers can circumvent enterprise ID verification, gaining illicit access to or the ability to alter services, plugins, environment variables, and certificates belonging to other enterprises.

Affected Version(s)

rainbond 0 <= 6.9.7

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-2026-72741 - Proof of Concept

References

https://github.com/goodrain/rainbond/issues/2665
technical-descriptionexploit
https://www.vulncheck.com/advisories/rainbond-region-api-...
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
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
.