High severity · published Jun 1, 2026
CVE-2026-41013
Tenant-controlled comma smuggles arbitrary CIFS mount options
8.1
CVSS
0.2%
EPSS
No
On KEV
Description
Input validation bypass in SMB volume mount handling in CloudFoundry Foundation diego-release allows low-privileged CF space developer to inject arbitrary kernel CIFS mount options via bypassing the mount-option allowlist, enabling privilege escalation and security control bypass on multi-tenant Diego cells.
Affected versions:
smb-volume-release: All versions prior to v3.60.0
CF Deployment: All versions prior to v56.0.0
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CD
CF Deployment · CloudFoundry Foundation
before 56.0.0 · source: vendor
SM
smb-volume-release · CloudFoundry Foundation
before 3.60.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41013
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-41013
www.cloudfoundry.org
https://www.cloudfoundry.org/blog/cve-2026-41013-tenant-controlled-comma-smuggles-arbitrary-cifs-mount-options/
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