Critical severity · published Aug 28, 2026
CVE-2026-19295
Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement
9.9
CVSS
1.6%
EPSS
No
On KEV
Description
IBM Langflow OSS 1.0.0 through 1.11.1 allows an authenticated attacker to execute arbitrary operating system commands in the server process by saving a flow with a crafted type field value and triggering a build of a wrapper flow that references it. This allowed privilege escalation from "authenticated flow user" to arbitrary OS-level command execution under the server process identity, bypassing the LANGFLOW_ALLOW_CUSTOM_COMPONENTS=false policy control.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 75% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LO
Langflow OSS · IBM
1.0.0 through 1.11.1 · source: vendor
LA
Langflow · Langflow
1.0.0 before 1.11.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19295
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-19295
Vendor Advisory
https://www.ibm.com/support/pages/node/7284733
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