CVE-2026-47833
Medium
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.
SeverityMedium
CVSS6.1
Exploit probability—
ProductCloud Foundry Foundation Bpm-release
PublishedJun 18, 2026
First seenJun 18, 2026
Weakness typeCWE-59Improper link resolution
How to fix
Update
- Cloud Foundry Foundation bpm-release1.4.30 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Cloud Foundry Foundation bpm-release | v < 1.4.30 | 1.4.30 |
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