CVE-2026-18729: high-severity vulnerability in IBM Langflow OSS
Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement
Published · Updated
56Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 8.8epss 1.8%
from disclosure to weapon1 days
Published on NVDAug 28
1st PoC+1d
metasploitAug 28
exploitation probability
1.8%top 22% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote authenticated attacker to execute arbitrary code due to improper control of generation of code.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
IBM · Langflow OSSpublic PoCs found — 1
githubgithub.com/rmhowe425/POC-CVE-2026-18729★ 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-2026-19295CRITICALLangflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcementEPSS 3.0%CVE-2026-93674CRITICALLangflow OSS is affected by multiple vulnerabilitiesEPSS 2.7%CVE-2026-7873CRITICALCode Injection Vulnerability in Code Validation EndpointEPSS 1.1%CVE-2026-8476CRITICALDisk Cache Deserialization Remote Code Execution VulnerabilityEPSS 1.0%