CVE-2026-72741: Rainbond through 6.9.7 contains a broken access control vulnerability in the CheckToken function that allows a

Routine

HIGH 8.1

CVE-2026-72741 is a high-severity flaw (CVSS 8.1) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
CISA SSVC: public proof of concept

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 84%)
CISA exploited list	No
Weakness	CWE-639
Published	2026-08-13
Last modified	2026-10-24

Publisher (CNA): VulnCheck

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-08-13 18:18 UTCPublished CVE record published
2026-10-24 15:10 UTCUpdated Record last modified

Exact fixes by distribution

Fedora 46 · wasmedge · FIXED · 0.18.1-1.fc46 · FEDORA-2026-4c27216e39 · source

sudo dnf upgrade --advisory=FEDORA-2026-4c27216e39

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/goodrain/rainbond/issues/2665

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-72741?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-72741 being exploited?

CVE-2026-72741 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-72741 affect?

CVE-2026-72741 affects affected software. Severity is high (CVSS 8.1). 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.

How urgent is CVE-2026-72741?

Priority 35/100. High severity; CISA SSVC: public proof of concept

References

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