by Kastro
Paper/Archive/CVE-2026-18894

CVE-2026-18894

IBM Langflow OSS — Langflow OSS is affected by multiple vulnerabilities

EPSS 0.4%CVSS 9.8
critical.is priorityof 100
37
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 37.0.370 × 207.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Langflow OSS1.0.0 – 1.12.4–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
ibm (CNA)6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

patchibm.com/support/pages/node/7293016