CVE-2026-47833

Host password-hash disclosure via symlinked log ownership

Published Jun 18, 2026 · Updated Jun 18, 2026

Link following in setupBpmLogs in Cloud Foundry Foundation bpm-release before 1.4.30 allows guest OS users to read host password hashes. The routine opens and changes ownership of bpm.log as root without rejecting a symlink, so a container process can redirect both operations to a host file. Control of a process inside a BPM container is required; targeting /etc/shadow transfers it to vcap and exposes its password hashes through the read-only /etc bind mount.

CVSS severity6.8
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Link following in setupBpmLogs in Cloud Foundry Foundation bpm-release before 1.4.30 allows guest OS users to read host password hashes. The routine opens and changes ownership of bpm.log as root without rejecting a symlink, so a container process can redirect both operations to a host file. Control of a process inside a BPM container is required; targeting /etc/shadow transfers it to vcap and exposes its password hashes through the read-only /etc bind mount.

The record

CVE
CVE-2026-47833
Published
Jun 18, 2026
Updated
Jun 18, 2026
Vendor
Cloud Foundry Foundation
Product
BOSH Process Manager (bpm)
Classifications
CWE-59, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.4.30

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Cloud Foundry Foundation · BOSH Process Manager (bpm)version=0 <1.4.30

Published CVSS scores

6.8Cloud Foundry Foundation CNACVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
6.1Cloud Foundry Foundation CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-59Improper Link Resolution Before File Access ('Link Following')
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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