CVE-2026-104339 Langflow OSS is affected by multiple vulnerabilities

CriticalCVSS 9.8 EPSS 0.75%

Published: 2026-10-29 17:16
Updated: 2026-10-30 15:29
Exploit status: No public exploit known

Description

IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote attacker to execute arbitrary code due to improper neutralization of special elements used in an OS command.

Affected products

Product	Affected versions	Fixed in
ibm langflow oss	>= 1.0.0, <= 1.12.3	No fix listed
langflow	>= 1.0.0, < 1.12.4	1.12.4

References

www.ibm.com patch vendor-advisory

CVSS v3.1

9.8 Critical

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

All scores (2)

v3.1 9.8 · ibm
v3.1 9.8 · psirt@us.ibm.com

Weakness & likelihood

EPSS (exploitation probability, 30 days): 0.75% (percentile 55.4)
CWE: CWE-94 Improper Control of Generation of Code ('Code Injection')

Public exploit references

Metadata only. CVERadar never hosts or runs exploit code.

No public exploit references known.