CVE-2026-12821
MEDIUM
6.3
CVSS 3.1
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.
Metadata
Severity & Metrics
6.3
MEDIUM CVSS 3.1
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
Affected products (1)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| FlowiseAI | Flowise | — | 3.1.0, 3.1.1, 3.1.2 |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| CWE-22 | cna | Path Traversal |
CVSS scores (4)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 6.5 | N/D | 2.0 | cna | AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR |
| 6.3 | MEDIUM | 3.1 | cna | 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 |
| 6.3 | MEDIUM | 3.0 | cna | 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 |
| 5.3 | MEDIUM | 4.0 | cna | 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 |
References (5)
- VDB-372611 | FlowiseAI Flowise S3 Document Loader S3.ts path traversal https://vuldb.com/vuln/372611
- VDB-372611 | CTI Indicators (IOB, IOC, TTP, IOA) https://vuldb.com/vuln/372611/cti
- CVE-2026-12821 | CVE Analysis and Report https://vuldb.com/cve/CVE-2026-12821
- 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 Cleanup https://vuldb.com/submit/837578
- https://github.com/dxz0069/softwareoverflow/blob/main/flowise_s3_loader_object_key_path_traversal_vulndb.md