Path Traversal in Flowise
CVE-2026-56273
Flowise before 3.1.0 contains a path traversal vulnerability in Faiss and SimpleStore vector store implementations that accept unsanitized basePath parameters from authenticated users. Attackers with valid API tokens can write vector store data to arbitrary filesystem locations, potentially enabling code execution or data exfiltration.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (40.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Flowise — versions 0, 3.1.0
Weakness classification (CWE)
References
- github.com/FlowiseAI/Flowise/security/advisories/GHSA-w6v6-49gh-mc9w (vendor-advisory)
- www.vulncheck.com/advisories/flowise-path-traversal-in-vector-store-basepath-pa… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56273?
- CVE-2026-56273 is a medium-severity vulnerability in Flowise, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-07-08.
- How severe is CVE-2026-56273?
- Medium severity. CVSS v3 base score is 6.5 out of 10.