What is CVE-2026-81940?

CVE-2026-81940 is a high-severity vulnerability in IBM Langflow Oss, classified under Code Injection. CVSS score: 8.8/10. Published 2026-09-10.

How severe is CVE-2026-81940?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in IBM Langflow Oss

CVE-2026-81940

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary code due to improper neutralization of special characters in flow display names.

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ibm Langflow Oss

Weakness classification (CWE)

CWE-94 — Code Injection

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-81940?: CVE-2026-81940 is a high-severity vulnerability in IBM Langflow Oss, classified under Code Injection. CVSS score: 8.8/10. Published 2026-09-10.
How severe is CVE-2026-81940?: High severity. CVSS v3 base score is 8.8 out of 10.