CVE-2026-7658

MEDIUM 6.5

Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

IBM Langflow OSS 1.0.0 through 1.10.3 does not properly validate the username field, allowing attackers to inject path traversal sequences and bypass containment checks. This enables multiple severe impacts, including arbitrary directory deletion, cross-tenant data destruction, and JWT signing key deletion leading to session invalidation.

CWE	CWE-22
Vendor	ibm
Product	langflow oss
Published	Aug 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Affected Versions

IBM / Langflow OSS

1.0.0 ≤ 1.10.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

ibm.com: https://www.ibm.com/support/pages/node/7282647

Credits

Sergio Cabrera (ddlxstudio) https://github.com/nekros1xx