What is CVE-2026-17291?

CVE-2026-17291 is a high-severity vulnerability in IBM API Connect, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 8.7/10. Published 2026-11-07.

How severe is CVE-2026-17291?

High severity. CVSS v3 base score is 8.7 out of 10.

Open Redirect in IBM API Connect

CVE-2026-17291

IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to perform account takeover due to an open redirect vulnerability. The redirect address used during OAuth 2.0 sign-in is not sufficiently validated, which could allow authentication results to be sent to an attacker-controlled location.

Vulnerability class: Open Redirect

Published 2026-11-07 · last modified 2026-11-07.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

IBM API Connect

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

www.ibm.com/support/pages/node/7295635 (vendor-advisory, patch)
www.ibm.com/support/pages/node/7295637 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-17291?: CVE-2026-17291 is a high-severity vulnerability in IBM API Connect, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 8.7/10. Published 2026-11-07.
How severe is CVE-2026-17291?: High severity. CVSS v3 base score is 8.7 out of 10.