Medium severity · published Jul 8, 2026
CVE-2026-56273
Flowise - Path Traversal in Vector Store basePath Parameter
6.5
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FL
Flowise · Flowise
before 3.1.0; before 3.1.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56273
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56273
github.com
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-w6v6-49gh-mc9w
www.vulncheck.com
https://www.vulncheck.com/advisories/flowise-path-traversal-in-vector-store-basepath-parameter
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