What is CVE-2026-84031?

CVE-2026-84031 is a critical-severity vulnerability in IBM Guardium Data Protection, classified under Cross-site Scripting. CVSS score: 9.0/10. Published 2026-09-18.

How severe is CVE-2026-84031?

Critical severity. CVSS v3 base score is 9.0 out of 10.

XSS in IBM Guardium Data Protection

CVE-2026-84031

IBM Guardium Data Protection 12.2 could allow a remote authenticated attacker to execute arbitrary code due to improper neutralization of input during web page generation.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-09-18 · last modified 2026-10-06.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (50.0th percentile), scored 2026-11-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

IBM Guardium Data Protection — versions 12.2
IBM Guardium Data Protection — versions 12.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.ibm.com/support/pages/node/7288040 (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-84031?: CVE-2026-84031 is a critical-severity vulnerability in IBM Guardium Data Protection, classified under Cross-site Scripting. CVSS score: 9.0/10. Published 2026-09-18.
How severe is CVE-2026-84031?: Critical severity. CVSS v3 base score is 9.0 out of 10.