What is CVE-2026-17209?

CVE-2026-17209 is a medium-severity vulnerability in IBM Db2 Mirror For I, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2026-08-14.

How severe is CVE-2026-17209?

Medium severity. CVSS v3 base score is 6.3 out of 10.

XSS in IBM Db2 Mirror For I

CVE-2026-17209

IBM Db2 Mirror for i 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to execute arbitrary scripts due to cross-site scripting.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-08-14 · last modified 2026-08-21.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (27.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.1% 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: 0.004 · change: +0.002

Affected products

IBM Db2 Mirror For I — versions 7.4, 7.5, 7.6
IBM Db2 Mirror For I

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.ibm.com/support/pages/node/7283359 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-17209?: CVE-2026-17209 is a medium-severity vulnerability in IBM Db2 Mirror For I, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2026-08-14.
How severe is CVE-2026-17209?: Medium severity. CVSS v3 base score is 6.3 out of 10.