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CVE-2026-61708

SOCFortress CoPilot: Cross-Tenant Arbitrary Object-Store Write via the Data-Store Upload Endpoint (customer_user)

8.5 High

SOCFortress CoPilot focuses on providing a single pane of glass for all your security operations needs. Prior to 0.1.76, POST /api/agent_data_store/upload in backend/app/data_store/data_store_routes.py permits customer_user callers to choose bucket_name and object_name without an allowlist, tenant prefix, ownership check or content restriction. The only file check requires a nonempty filename. The operations in backend/app/data_store/data_store_operations.py create missing buckets and upsert objects, allowing existing objects belonging to any tenant to be overwritten. Targets include sysmon-configs/<customer_code>/sysmon_config.xml distributed to managed Windows endpoints, copilot-case-report-templates/<name> rendered server-side, and case evidence or forensic artifacts under copilot-cases/<case_id>/<file> and velociraptor-artifacts/<agent_id>/<flow_id>/<file>. A lowest-privilege user can tamper with cross-tenant evidence, blind endpoint telemetry, poison report templates for later code execution, plant data or exhaust storage. Sibling list, download and delete routes remain restricted to admin/analyst; the exposed operation is the upload write path. This issue is fixed in version 0.1.76.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
Low

Exploit likelihood

0.40%Unchanged since Oct 31, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.5

SOCFortress CoPilot: Cross-Tenant Arbitrary Object-Store Write via the Data-Store Upload Endpoint (customer_user)

SOCFortress CoPilot focuses on providing a single pane of glass for all your security operations needs. Prior to 0.1.76, POST /api/agent_data_store/upload in backend/app/data_store/data_store_routes.py permits customer_user callers to choose bucket_name and object_name without an allowlist, tenant prefix, ownership check or content restriction. The only file check requires a nonempty filename. The operations in backend/app/data_store/data_store_operations.py create missing buckets and upsert objects, allowing existing objects belonging to any tenant to be overwritten. Targets include sysmon-configs/<customer_code>/sysmon_config.xml distributed to managed Windows endpoints, copilot-case-report-templates/<name> rendered server-side, and case evidence or forensic artifacts under copilot-cases/<case_id>/<file> and velociraptor-artifacts/<agent_id>/<flow_id>/<file>. A lowest-privilege user can tamper with cross-tenant evidence, blind endpoint telemetry, poison report templates for later code execution, plant data or exhaust storage. Sibling list, download and delete routes remain restricted to admin/analyst; the exposed operation is the upload write path. This issue is fixed in version 0.1.76.

Record
CVE-2026-61708
CVSS 3.1
8.5 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L
Weakness
CWE-284, CWE-639, CWE-862
Updated
2026-11-02
EUVDEUVD-2026-114084 8.5

SOCFortress CoPilot focuses on providing a single pane of glass for all your security operations needs. Prior to 0.1.76, POST /api/agent_data_store/upload in backend/app/data_store/data_store_routes.py permits customer_user callers to choose bucket_name and object_name without an allowlist, tenant prefix, ownership check or content restriction. The only file check requires a nonempty filename. The operations in backend/app/data_store/data_store_operations.py create missing buckets and upsert objects, allowing existing objects belonging to any tenant to be overwritten. Targets include sysmon-configs/<customer_code>/sysmon_config.xml distributed to managed Windows endpoints, copilot-case-report-templates/<name> rendered server-side, and case evidence or forensic artifacts under copilot-cases/<case_id>/<file> and velociraptor-artifacts/<agent_id>/<flow_id>/<file>. A lowest-privilege user can tamper with cross-tenant evidence, blind endpoint telemetry, poison report templates for later code execution, plant data or exhaust storage. Sibling list, download and delete routes remain restricted to admin/analyst; the exposed operation is the upload write path. This issue is fixed in version 0.1.76.

Record
EUVD-2026-114084
CVSS 3.1
8.5 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L
Updated
2026-11-02
NVD 8.5

SOCFortress CoPilot focuses on providing a single pane of glass for all your security operations needs. Prior to 0.1.76, POST /api/agent_data_store/upload in backend/app/data_store/data_store_routes.py permits customer_user callers to choose bucket_name and object_name without an allowlist, tenant prefix, ownership check or content restriction. The only file check requires a nonempty filename. The operations in backend/app/data_store/data_store_operations.py create missing buckets and upsert objects, allowing existing objects belonging to any tenant to be overwritten. Targets include sysmon-configs/<customer_code>/sysmon_config.xml distributed to managed Windows endpoints, copilot-case-report-templates/<name> rendered server-side, and case evidence or forensic artifacts under copilot-cases/<case_id>/<file> and velociraptor-artifacts/<agent_id>/<flow_id>/<file>. A lowest-privilege user can tamper with cross-tenant evidence, blind endpoint telemetry, poison report templates for later code execution, plant data or exhaust storage. Sibling list, download and delete routes remain restricted to admin/analyst; the exposed operation is the upload write path. This issue is fixed in version 0.1.76.

Record
CVE-2026-61708
CVSS 3.1
8.5 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L
Weakness
CWE-284, CWE-639, CWE-862
Updated
2026-11-02
OSV 8.5

SOCFortress CoPilot: Cross-Tenant Arbitrary Object-Store Write via the Data-Store Upload Endpoint (customer_user)

SOCFortress CoPilot focuses on providing a single pane of glass for all your security operations needs. Prior to 0.1.76, POST /api/agent_data_store/upload in backend/app/data_store/data_store_routes.py permits customer_user callers to choose bucket_name and object_name without an allowlist, tenant prefix, ownership check or content restriction. The only file check requires a nonempty filename. The operations in backend/app/data_store/data_store_operations.py create missing buckets and upsert objects, allowing existing objects belonging to any tenant to be overwritten. Targets include sysmon-configs/<customer_code>/sysmon_config.xml distributed to managed Windows endpoints, copilot-case-report-templates/<name> rendered server-side, and case evidence or forensic artifacts under copilot-cases/<case_id>/<file> and velociraptor-artifacts/<agent_id>/<flow_id>/<file>. A lowest-privilege user can tamper with cross-tenant evidence, blind endpoint telemetry, poison report templates for later code execution, plant data or exhaust storage. Sibling list, download and delete routes remain restricted to admin/analyst; the exposed operation is the upload write path. This issue is fixed in version 0.1.76.

Record
CVE-2026-61708
CVSS 3.1
8.5 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L
Weakness
CWE-284, CWE-639, CWE-862
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
first indexedCVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-61708 is a high vulnerability (CVSS 8.5) in Socfortress Copilot, published October 30, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 34th percentile. No source names a fixed version.

References

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