{"id":"CVE-2026-41009","aliases":["EUVD-2026-32098","GHSA-gq7j-4834-ccgp"],"status":"published","title":"Local Blobstore may allow arbitrary reads/deletes","description":"When the director sends a long-running request (e.g. compile_package), the agent's reply JSON is consumed by AgentClient. inject_compile_log (line 332-339) reads response['value']['result']['compile_log_id'] and format_exception (line 318-325) reads exception['blobstore_id']; both pass the agent-supplied string unmodified to download_and_delete_blob(blob_id) (line 344-349), which calls @resource_manager.get_resource(blob_id) and, in an ensure block, @resource_manager.delete_resource(blob_id). Api::ResourceManager forwards the id straight to blobstore.get(id) / blobstore.delete(id). When the director is configured with the local blobstore provider, Blobstore::LocalClient#object_file_path(oid) is File.join(@blobstore_path, oid) (local_client.rb:54-56) with no normalisation, so oid = \"../../jobs/director/config/director.yml\" resolves outside the blobstore root.\n\nAffected versions:\nBOSH Director: All versions prior to v282.1.12","severity":{"version":"4.0","score":4.3,"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00099,"percentile":0.00814,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22"],"published":"2026-05-27T06:45:11Z","modified":"2026-10-28T02:31:01Z","products":[{"vendor":"cloud foundry foundation","product":"bosh director"},{"vendor":"cloud_foundry","product":"bosh"}],"references":[{"url":"https://www.cloudfoundry.org/blog/cve-2026-41009-local-blobstore-may-allow-arbitrary-reads-deletes/","tags":["Mitigation","Vendor Advisory","article"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41009","tags":["advisory"]},{"url":"https://www.cloudfoundry.org/blog/cve-2026-41009-local-blobstore-may-allow-arbitrary-reads-deletes"},{"url":"https://github.com/advisories/GHSA-gq7j-4834-ccgp"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41009.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-41009","title":"Local Blobstore may allow arbitrary reads/deletes","description":"When the director sends a long-running request (e.g. compile_package), the agent's reply JSON is consumed by AgentClient. inject_compile_log (line 332-339) reads response['value']['result']['compile_log_id'] and format_exception (line 318-325) reads exception['blobstore_id']; both pass the agent-supplied string unmodified to download_and_delete_blob(blob_id) (line 344-349), which calls @resource_manager.get_resource(blob_id) and, in an ensure block, @resource_manager.delete_resource(blob_id). Api::ResourceManager forwards the id straight to blobstore.get(id) / blobstore.delete(id). When the director is configured with the local blobstore provider, Blobstore::LocalClient#object_file_path(oid) is File.join(@blobstore_path, oid) (local_client.rb:54-56) with no normalisation, so oid = \"../../jobs/director/config/director.yml\" resolves outside the blobstore root.\n\nAffected versions:\nBOSH Director: All versions prior to v282.1.12","status":"published","published":"2026-05-27T06:45:11.124Z","modified":"2026-05-27T13:38:30.294Z","cvss":[{"version":"4.0","score":4.3,"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:L","level":"medium","assessor":"cna"},{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T13:41:19.694734Z"}],"euvd":[{"id":"EUVD-2026-32098","description":"When the director sends a long-running request (e.g. compile_package), the agent's reply JSON is consumed by AgentClient. inject_compile_log (line 332-339) reads response['value']['result']['compile_log_id'] and format_exception (line 318-325) reads exception['blobstore_id']; both pass the agent-supplied string unmodified to download_and_delete_blob(blob_id) (line 344-349), which calls @resource_manager.get_resource(blob_id) and, in an ensure block, @resource_manager.delete_resource(blob_id). Api::ResourceManager forwards the id straight to blobstore.get(id) / blobstore.delete(id). When the director is configured with the local blobstore provider, Blobstore::LocalClient#object_file_path(oid) is File.join(@blobstore_path, oid) (local_client.rb:54-56) with no normalisation, so oid = \"../../jobs/director/config/director.yml\" resolves outside the blobstore root.\n\nAffected versions:\nBOSH Director: All versions prior to v282.1.12","status":"published","published":"2026-05-27T06:45:11Z","modified":"2026-05-27T13:38:30Z","cvss":[{"version":"4.0","score":4.3,"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:L","level":"medium"}],"updated_at":"2026-11-02T18:21:04.78276Z"}],"ghsa":[{"id":"GHSA-gq7j-4834-ccgp","title":"When the director sends a long-running request (e.g. compile_package), the agent's reply JSON is...","description":"When the director sends a long-running request (e.g. compile_package), the agent's reply JSON is consumed by AgentClient. inject_compile_log (line 332-339) reads response['value']['result']['compile_log_id'] and format_exception (line 318-325) reads exception['blobstore_id']; both pass the agent-supplied string unmodified to download_and_delete_blob(blob_id) (line 344-349), which calls @resource_manager.get_resource(blob_id) and, in an ensure block, @resource_manager.delete_resource(blob_id). Api::ResourceManager forwards the id straight to blobstore.get(id) / blobstore.delete(id). When the director is configured with the local blobstore provider, Blobstore::LocalClient#object_file_path(oid) is File.join(@blobstore_path, oid) (local_client.rb:54-56) with no normalisation, so oid = \"../../jobs/director/config/director.yml\" resolves outside the blobstore root.\n\nAffected versions:\nBOSH Director: All versions prior to v282.1.12","status":"published","published":"2026-05-27T09:31:15Z","modified":"2026-05-27T09:31:23Z","cvss":[{"version":"4.0","score":4.3,"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:L","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:08:20.329411Z"}],"nvd":[{"id":"CVE-2026-41009","description":"When the director sends a long-running request (e.g. compile_package), the agent's reply JSON is consumed by AgentClient. inject_compile_log (line 332-339) reads response['value']['result']['compile_log_id'] and format_exception (line 318-325) reads exception['blobstore_id']; both pass the agent-supplied string unmodified to download_and_delete_blob(blob_id) (line 344-349), which calls @resource_manager.get_resource(blob_id) and, in an ensure block, @resource_manager.delete_resource(blob_id). Api::ResourceManager forwards the id straight to blobstore.get(id) / blobstore.delete(id). When the director is configured with the local blobstore provider, Blobstore::LocalClient#object_file_path(oid) is File.join(@blobstore_path, oid) (local_client.rb:54-56) with no normalisation, so oid = \"../../jobs/director/config/director.yml\" resolves outside the blobstore root.\n\nAffected versions:\nBOSH Director: All versions prior to v282.1.12","status":"published","published":"2026-05-27T08:16:43.647Z","modified":"2026-10-26T11:10:00.157Z","cvss":[{"version":"4.0","score":4.3,"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.8,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:12:20.511562Z"}],"osv":[{"id":"CVE-2026-41009","title":"Local Blobstore may allow arbitrary reads/deletes","description":"When the director sends a long-running request (e.g. compile_package), the agent's reply JSON is consumed by AgentClient. inject_compile_log (line 332-339) reads response['value']['result']['compile_log_id'] and format_exception (line 318-325) reads exception['blobstore_id']; both pass the agent-supplied string unmodified to download_and_delete_blob(blob_id) (line 344-349), which calls @resource_manager.get_resource(blob_id) and, in an ensure block, @resource_manager.delete_resource(blob_id). Api::ResourceManager forwards the id straight to blobstore.get(id) / blobstore.delete(id). When the director is configured with the local blobstore provider, Blobstore::LocalClient#object_file_path(oid) is File.join(@blobstore_path, oid) (local_client.rb:54-56) with no normalisation, so oid = \"../../jobs/director/config/director.yml\" resolves outside the blobstore root.\n\nAffected versions:\nBOSH Director: All versions prior to v282.1.12","status":"published","published":"2026-05-27T06:45:11.124Z","modified":"2026-10-28T02:31:01.07072903Z","cvss":[{"version":"4.0","score":4.3,"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:L","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:45:03.424067Z"}]}}