6.5
MediumCVSS 3.1 · from ibm
CVE-2026-18894
Langflow OSS is affected by multiple vulnerabilities
Langflow OSS · Code injection · CWE-94AffectedLangflow OSS
FixA patch is linked in the references.
PublishedOct 29, 15:19 · ibm
ScoredOct 29 · 6.5 · ibm
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:06 UTC
What we know
No known exploitation. CISA KEV, checked 22:06 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker only needs network access to the target. No login needed. CVSS: network, no privileges.
Description
IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote attacker to trigger pre-existing stored Python component code in a public workflow, executing it under the flow owner's runtime context within the server process. This bypasses the intended trust boundary where public execution paths are restricted to server-trusted component code.
From ibm
Affected and fixed versions
ProductAffectedFixed inLangflow OSS1.0.0 – 1.12.4–
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known