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Home/Vulnerability/CVE-2026-5027

CVE-2026-5027

Langflow - Path Traversal Arbitrary File Write via upload_user_file

Published: Mar 27, 2026Updated: Mar 30, 2026 Sources: CVE List NVD
NVD MITRE
8.8CVSS
HIGH

The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences ('../').

EPSS Score
4.1%
Top 11.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

CWE-22

Affected Products

langflow
langflow-ai
AI / ML
langflow-aicommercialAI / ML

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://www.tenable.com/security/research/tra-2026-26
tenable.com

Timeline

Published
Mar 27, 2026
Last Updated
Mar 30, 2026
News mentions
3

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