CVE-2026-19295: critical vulnerability in IBM Langflow OSS
Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement
Published · Updated
63Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 9.9epss 3.0%
from disclosure to weapon0 days
Published on NVDAug 28
1st PoCAug 28
metasploitAug 28
exploitation probability
3.0%top 13% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products
IBM · Langflow OSSpublic PoCs found — 1
githubgithub.com/rmhowe425/POC-CVE-2026-19295★ 1⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — IBM Langflow OSS
In the same product, most dangerous first.
CVE-2026-9198CRITICALUnauthenticated Remote Code Execution via Auto-Login Bypass and Code ValidationEPSS 28.7%KEVCVE-2026-9103CRITICALUnauthenticated Superuser Token Issuance via Auto-Login EndpointEPSS 3.2%CVE-2026-93674CRITICALLangflow OSS is affected by multiple vulnerabilitiesEPSS 2.7%CVE-2026-18729HIGHLangflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcementEPSS 1.8%CVE-2026-7873CRITICALCode Injection Vulnerability in Code Validation EndpointEPSS 1.1%CVE-2026-8476CRITICALDisk Cache Deserialization Remote Code Execution VulnerabilityEPSS 1.0%