How severe is CVE-2026-47828?

CVE-2026-47828 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-47828 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-47828?

CVE-2026-47828 affects Cloudfoundry Bosh Cli. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-47828?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-47828 published?

CVE-2026-47828 was published on 2026-07-09 and last updated on 2026-07-13.

CVE-2026-47828

CVE-2026-47828 is a high-severity vulnerability in Cloudfoundry Bosh Cli with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.9
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cloudfoundry Bosh Cli
Published: 2026-07-09
Last modified: 2026-07-13

Description

During bosh create-env and bosh delete-env, the CLI uploads compiled CPI packages and rendered job templates to the new VM's DAV blobstore over HTTPS without verifying the server certificate, even though a CA certificate for that endpoint is available in the installation manifest. A network attacker can terminate the TLS connection, harvest the Basic-auth credentials, and read the rendered-templates archive containing every bootstrap secret for the new BOSH Director, then replay the credentials against the real VM's agent for root code execution. Affected versions: bosh-cli versions prior to v7.10.4.

Frequently asked questions

What is CVE-2026-47828?: During bosh create-env and bosh delete-env, the CLI uploads compiled CPI packages and rendered job templates to the new VM's DAV blobstore over HTTPS without verifying the server certificate, even though a CA certificate for that endpoint is available in the installation manifest. A network attacker can terminate the TLS connection, harvest the Basic-auth credentials, and read the rendered-templates archive containing every bootstrap secret for the new BOSH Director, then replay the credentials against the real VM's agent for root code execution. Affected versions: bosh-cli versions prior to v7.10.4.
How severe is CVE-2026-47828?: CVE-2026-47828 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-47828 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-47828?: CVE-2026-47828 affects Cloudfoundry Bosh Cli. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-47828?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-47828 published?: CVE-2026-47828 was published on 2026-07-09 and last updated on 2026-07-13.

References

https://www.cloudfoundry.org/blog/cve-2026-47828-missing-tls-certificate-verification-in-bosh-cli-allows-root-code-execution-via-man-in-the-middle-credential-replay/

Affected products (1)

cpe:2.3:a:cloudfoundry:bosh_cli:*:*:*:*:*:*:*:*

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