PT-2026-43567 · Cloud Foundry Foundation · Bosh Director

Published 2026-05-27 · Updated 2026-05-27 · CVE-2026-41704

NVD

CVSS v3.1

5.0

Medium

Base vector

AV:L/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:N

AgentClient#handle method (lines 264-303) processes every NATS reply. It calls inject compile log (line 273) on every response, which reads response['value']['result']['compile log id'] (line 332-338) and passes it to download and delete blob. Separately, any response containing 'exception' goes through format exception (lines 308-325), which reads exception['blobstore id'] and also calls download and delete blob. That helper (lines 344-349) calls ResourceManager#get resource(blob id) and, in an ensure block, ResourceManager#delete resource(blob id). ResourceManager (resource manager.rb:62-70) calls blobstore.delete(id) on the single shared Director blobstore with no UUID-format check, no ownership check, and no namespace prefix.

Affected versions: BOSH Director: All versions prior to v282.1.12

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

CVE-2026-41704

Affected Products

Bosh Director

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-41704 · Security Note
• https://cloudfoundry.org/blog/cve-2026-41704-compromised-vm-can-make-arbitrary-blobstore-deletes · Note