Medium 6.3Published Jun 21, 2026

CVE-2026-12821FlowiseAI Flowise S3 Document Loader S3.ts path traversal

Updated under an hour ago (Oct 28, 2026, 8:50 AM ET)

Does this affect you?

It affects FlowiseAI Flowise. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for FlowiseAI Flowise

Exploited in the last 30 days

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.

CVSS: 6.3 MEDIUM (v3.1, 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
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Jun 22, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

FlowiseAI Flowise flowiseai:flowise	3.1.0; 3.1.1; 3.1.2	CNA record

References

References

https://vuldb.com/vuln/372611	vdb-entry
https://vuldb.com/vuln/372611/cti	signature, permissions-required
https://vuldb.com/cve/CVE-2026-12821	third-party-advisory
https://vuldb.com/submit/837578	third-party-advisory
https://github.com/dxz0069/softwareoverflow/blob/main/flowise_s3_loader_object_key_path_traversal_vulndb.md	related

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.