What is CVE-2026-12821?

CVE-2026-12821 is a medium-severity vulnerability in Flowiseai Flowise, classified under Path Traversal. CVSS score: 6.3/10. Published 2026-06-22.

How severe is CVE-2026-12821?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Path Traversal in Flowiseai Flowise

CVE-2026-12821

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 l…

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Flowiseai Flowise — versions 3.1.0, 3.1.1, 3.1.2

Weakness classification (CWE)

CWE-22 — Path Traversal

References

cna@vuldb.com (vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (related)

Frequently asked questions

What is CVE-2026-12821?: CVE-2026-12821 is a medium-severity vulnerability in Flowiseai Flowise, classified under Path Traversal. CVSS score: 6.3/10. Published 2026-06-22.
How severe is CVE-2026-12821?: Medium severity. CVSS v3 base score is 6.3 out of 10.