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CVE-2026-18894

Langflow OSS is affected by multiple vulnerabilities

Severity
Critical 9.8
Published
29 Oct 2026
Last changed
30 Oct 2026
Added to UpHeron
1 Nov 2026
Fixed in
1.12.5
Sources
NVD, CVE Program

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.

Affected software

SoftwareAffected versions
LangflowServers and applications · cna:ibm|langflow oss
  • From 1.0.0 up to 1.12.4
LangflowServers and applications · cpe:a:langflow:langflow
  • From 1.0.0 before 1.12.5

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-18894
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-18894