What is CVE-2026-12766?

CVE-2026-12766 is a medium-severity vulnerability in IBM Langflow Oss, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.4/10. Published 2026-09-14.

How severe is CVE-2026-12766?

Medium severity. CVSS v3 base score is 5.4 out of 10.

SSRF in IBM Langflow Oss

CVE-2026-12766

IBM Langflow OSS 1.0.0 through 1.11.2 is vulnerable to server-side request forgery (SSRF). This may allow an authenticated attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks.

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Ibm Langflow Oss

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

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

Frequently asked questions

What is CVE-2026-12766?: CVE-2026-12766 is a medium-severity vulnerability in IBM Langflow Oss, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.4/10. Published 2026-09-14.
How severe is CVE-2026-12766?: Medium severity. CVSS v3 base score is 5.4 out of 10.