Auth bypass in Goodrain Rainbond
CVE-2026-72741
Rainbond through 6.9.7 contains a broken access control vulnerability in the CheckToken function that allows authenticated attackers to access unauthorized enterprise resources by substituting another enterprise's tenant name in URL paths. Attackers can use any valid API token to bypass enterprise ID verification and access or modify another enterprise's services, plugins, environment variables, and certificates.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (15.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Goodrain Rainbond — versions 0
Weakness classification (CWE)
References
- github.com/goodrain/rainbond/issues/2665 (issue-tracking, technical-description, exploit)
- www.vulncheck.com/advisories/rainbond-region-api-cross-enterprise-idor-via-tena… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-72741?
- CVE-2026-72741 is a high-severity vulnerability in Goodrain Rainbond, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-08-13.
- How severe is CVE-2026-72741?
- High severity. CVSS v3 base score is 8.1 out of 10.