What is CVE-2026-15435?

CVE-2026-15435 is a critical-severity vulnerability in IBM App Connect Enterprise, classified under Path Traversal. CVSS score: 9.8/10. Published 2026-07-30.

How severe is CVE-2026-15435?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Path Traversal in IBM App Connect Enterprise

CVE-2026-15435

IBM App Connect Enterprise 13.0.1.0 through 13.0.7.2, and 12.0.1.0 through 12.0.12.27 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to write arbitrary files on the system.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.005 (41.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ibm App Connect Enterprise — versions 13.0.1.0, 12.0.1.0
Ibm App_connect_enterprise

Weakness classification (CWE)

CWE-22 — Path Traversal

References

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

Frequently asked questions

What is CVE-2026-15435?: CVE-2026-15435 is a critical-severity vulnerability in IBM App Connect Enterprise, classified under Path Traversal. CVSS score: 9.8/10. Published 2026-07-30.
How severe is CVE-2026-15435?: Critical severity. CVSS v3 base score is 9.8 out of 10.