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CVE-2025-34291

Langflow <= 1.6.9 CORS Misconfiguration to Token Hijack & RCE

Published: Dec 5, 2025Updated: May 21, 2026 Sources: CVE List NVD GHSACWE-346
8.8HIGH
NVD MITRE
EPSS Score
78.9%
Top 0.5%
CISA KEV
Active Exploitation
Since May 21, 2026
Exploits
1 Known
Remediation
Patch Available
Self-Check
Nuclei · OpenVAS

Description

Langflow CORS misconfiguration enables Account Takeover and RCE

No summary for this CVE yet.

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
Open in CVSS calculator →

Weaknesses

CWE-346

Affected Products

PyPI
package-ecosystem
langflow
OSS Libraries
Langflow
commercialaka langflow desktop, langflow-base
LangflowSaaS
AI / ML / ai-agent-tooling
and 1 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:May 21, 2026
Remediation due:Jun 4, 2026

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available
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References

https://nvd.nist.gov/vuln/detail/CVE-2025-34291
nvd.nist.gov
https://github.com/langflow-ai/langflow/pull/10139
github.com
https://github.com/langflow-ai/langflow/pull/10696
github.com
and 8 more references View all →
News mentions
1

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