CVE-2026-12821
FlowiseAI Flowise S3 Document Loader S3.ts path traversal
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jun 21, 2026
- Updated
- Jun 22, 2026
- Reserved
- Jun 21, 2026
Description
A vulnerability was determined in FlowiseAI Flowise up to 3.1.2. The impacted element is an unknown function of the file packages/components/nodes/documentloaders/S3/S3.ts of the component S3 Document Loader. Executing a manipulation can lead to path traversal. It is possible to launch the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 6.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R | VulDB |
| 3.0 | 6.3 Medium | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 6.5 Medium | AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
- CWE-22 Path Traversal
Affected Products
| Product | Versions |
|---|---|
FlowiseFlowiseAI |
|
References
- VDB-372611 | FlowiseAI Flowise S3 Document Loader S3.ts path traversalvdb-entry
- VDB-372611 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- CVE-2026-12821 | CVE Analysis and Reportthird-party-advisory
- Submit #837578 | FlowiseAI/Flowise - `packages/components/nodes/documentloaders/S3/S3.ts` - `S3Directory / S3File document loader temporary-file handling` 3.1.2 Path Traversal / Arbitrary Local File Write / Unsafe Cleanupthird-party-advisory
- https://github.com/dxz0069/softwareoverflow/blob/main/flowise_s3_loader_object_key_path_traversal_vulndb.mdrelated
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