CVE-2026-47833

Container-to-host privilege escalation via symlink in Cloud Foundry BPM setupBpmLogs

Published Jun 18, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
setupBpmLogs follows symlink for bpm.log open and chown — container-to-host privilege escalation via /etc/shadow. A compromised process inside a bpm container can cause root to chown an arbitrary host file to vcap and append bpm JSON log lines to it. The chown alone lets the attacker take ownership of /etc/shadow and read every password hash on the host via the read-only /etc bind mount. This is a container-to-host confidentiality break affecting every bpm-managed job.

Affected versions: bpm-release, all versions prior to v1.4.30.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Cloudfoundry
Cloudfoundry bpm-release
Vendors & Products Cloudfoundry
Cloudfoundry bpm-release
Type Values Removed Values Added
Title Container-to-host privilege escalation via symlink in Cloud Foundry BPM setupBpmLogs
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description setupBpmLogs follows symlink for bpm.log open and chown — container-to-host privilege escalation via /etc/shadow. A compromised process inside a bpm container can cause root to chown an arbitrary host file to vcap and append bpm JSON log lines to it. The chown alone lets the attacker take ownership of /etc/shadow and read every password hash on the host via the read-only /etc bind mount. This is a container-to-host confidentiality break affecting every bpm-managed job. Affected versions: bpm-release, all versions prior to v1.4.30.
Weaknesses CWE-59
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
vmware
Published
Updated
Jun 18, 2026, 7:08 PM
Reserved
May 20, 2026, 10:00 AM
Status
Awaiting Analysis
Published
Jun 18, 2026, 7:16 PM
Modified
Oct 26, 2026, 11:10 AM