What is CVE-2026-93886?

CVE-2026-93886 is a high-severity vulnerability in IBM I, classified under Cross-site Scripting. CVSS score: 8.3/10. Published 2026-10-13.

How severe is CVE-2026-93886?

High severity. CVSS v3 base score is 8.3 out of 10.

XSS in IBM I

CVE-2026-93886

IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to execute arbitrary script code due to improper validation of user-supplied input.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-13 · last modified 2026-10-13.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L.

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 I — versions 7.3, 7.4, 7.5

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.ibm.com/support/pages/node/7291760 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-93886?: CVE-2026-93886 is a high-severity vulnerability in IBM I, classified under Cross-site Scripting. CVSS score: 8.3/10. Published 2026-10-13.
How severe is CVE-2026-93886?: High severity. CVSS v3 base score is 8.3 out of 10.