Medium severity · published Oct 29, 2026
CVE-2026-18894
Langflow OSS is affected by multiple vulnerabilities
New
6.5
CVSS
–
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
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 1.12.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-18894
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-18894
vendor-advisory
https://www.ibm.com/support/pages/node/7293016
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