What is CVE-2026-17631?

CVE-2026-17631 is a medium-severity vulnerability in IBM Langflow Oss, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.0/10. Published 2026-09-04.

How severe is CVE-2026-17631?

Medium severity. CVSS v3 base score is 5.0 out of 10.

SSRF in IBM Langflow Oss

CVE-2026-17631

IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote authenticated attacker to obtain sensitive information due to a server-side request forgery (SSRF) vulnerability.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2026-09-04 · last modified 2026-09-09.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (14.0th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Weakness classification (CWE)

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

References

www.ibm.com/support/pages/node/7285644 (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-17631?: CVE-2026-17631 is a medium-severity vulnerability in IBM Langflow Oss, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.0/10. Published 2026-09-04.
How severe is CVE-2026-17631?: Medium severity. CVSS v3 base score is 5.0 out of 10.