Is CVE-2026-41013 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-41013 being exploited in the wild.

How severe is CVE-2026-41013?

Informational severity, with a CVSS score of 8.5, published 1 June 2026.

Which products and versions are affected?

Cloud Foundry Foundation Smb-Volume-Release versions prior to v3.60.0.

Is there a fix for CVE-2026-41013?

A patch was published on 2026-06-01. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-41013 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-41013?

Check whether you run Cloud Foundry Foundation Smb-Volume-Release at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-41013: CloudFoundry smb-volume-release input validation bypass in SMB mount handling

CVE-2026-41013 · Severity: info · CVSS 8.5 · Published 2026-06-01

CloudFoundry is an open-source platform used to deploy and manage cloud applications. A security flaw in how the platform handles SMB storage volumes allows low-privileged developers to bypass security restrictions when mounting network drives. This could allow an attacker to gain unauthorized access to the underlying server infrastructure, escalate their privileges, and compromise the security of other customers sharing the same hardware.

Vendors: Cloud Foundry Foundation.

Quick answers

Is CVE-2026-41013 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-41013 being exploited in the wild.
How severe is CVE-2026-41013?: Informational severity, with a CVSS score of 8.5, published 1 June 2026.
Which products and versions are affected?: Cloud Foundry Foundation Smb-Volume-Release versions prior to v3.60.0.
Is there a fix for CVE-2026-41013?: A patch was published on 2026-06-01. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-41013 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-41013?: Check whether you run Cloud Foundry Foundation Smb-Volume-Release at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An argument injection vulnerability (CWE-88) exists in the SMB mount-option validation logic within the CloudFoundry diego-release. By crafting malicious mount options containing commas, a low-privileged space developer can bypass the mount-option allowlist. This allows the injection of arbitrary kernel CIFS mount options such as 'setuids', 'noperm', or 'credentials=/path/on/host'. Successful exploitation enables an attacker to override security protocols, manipulate host-level credentials, and achieve privilege escalation or unauthorized file system access on shared Diego cells. The issue is resolved in smb-volume-release v3.60.0 and CF Deployment v56.0.0.

Affected products

CloudFoundry Foundation smb-volume-release versions prior to v3.60.0
CloudFoundry Foundation CF Deployment versions prior to v56.0.0

Timeline

2026-06-01: disclosed
2026-06-01: advisory
2026-06-01: patched

References

https://www.cloudfoundry.org/blog/cve-2026-41013-tenant-controlled-comma-smuggles-arbitrary-cifs-mount-options/

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.