CVE-2026-12821: Path Traversal in FlowiseAI Flowise
FlowiseAI Flowise versions 3.1.0, 3.1.1, and 3.1.2 contain a path traversal vulnerability in the S3 Document Loader component. This vulnerability allows remote attackers to manipulate file paths, potentially accessing unauthorized files. The vendor has not responded to the disclosure. A patch is available, and since this is a cloud service, the vendor typically manages remediation server-side.
AI Analysis
Technical Summary
CVE-2026-12821 is a path traversal vulnerability affecting FlowiseAI Flowise up to and including version 3.1.2. The issue exists in an unspecified function within the file packages/components/nodes/documentloaders/S3/S3.ts, part of the S3 Document Loader component. Exploitation can be performed remotely without user interaction and requires low privileges. The vulnerability has a CVSS 4.0 score of 5.3 (medium severity). The vendor was contacted but did not respond. The product is a cloud service, and a patch is available though no direct patch links were provided.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to perform path traversal attacks, potentially accessing or manipulating files outside the intended directories. This could lead to unauthorized data exposure or modification within the cloud-hosted Flowise service environment. The vulnerability requires low privileges and no user interaction, increasing the risk of remote exploitation.
Mitigation Recommendations
A patch is available for this vulnerability. Since Flowise is a cloud-hosted service, the vendor typically manages remediation on the server side. Users should verify with the vendor or service provider that the patch has been applied. Monitor vendor advisories for confirmation of remediation status.
CVE-2026-12821: Path Traversal in FlowiseAI Flowise
Description
FlowiseAI Flowise versions 3.1.0, 3.1.1, and 3.1.2 contain a path traversal vulnerability in the S3 Document Loader component. This vulnerability allows remote attackers to manipulate file paths, potentially accessing unauthorized files. The vendor has not responded to the disclosure. A patch is available, and since this is a cloud service, the vendor typically manages remediation server-side.
CVSS v4.0
Score 5.3medium
Affected software
pkg:github/dxz0069/flowisecpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-12821 is a path traversal vulnerability affecting FlowiseAI Flowise up to and including version 3.1.2. The issue exists in an unspecified function within the file packages/components/nodes/documentloaders/S3/S3.ts, part of the S3 Document Loader component. Exploitation can be performed remotely without user interaction and requires low privileges. The vulnerability has a CVSS 4.0 score of 5.3 (medium severity). The vendor was contacted but did not respond. The product is a cloud service, and a patch is available though no direct patch links were provided.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to perform path traversal attacks, potentially accessing or manipulating files outside the intended directories. This could lead to unauthorized data exposure or modification within the cloud-hosted Flowise service environment. The vulnerability requires low privileges and no user interaction, increasing the risk of remote exploitation.
Mitigation Recommendations
A patch is available for this vulnerability. Since Flowise is a cloud-hosted service, the vendor typically manages remediation on the server side. Users should verify with the vendor or service provider that the patch has been applied. Monitor vendor advisories for confirmation of remediation status.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-06-21T13:10:54.859Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
- Is Cloud Service
- true
Threat ID: 6a3872abeed863c81e86151b
Added to database: 06/21/2026, 23:24:27 UTC
Last enriched: 06/21/2026, 23:39:05 UTC
Last updated: 06/22/2026, 01:29:55 UTC
Views: 7
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.