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CVE record · CVE-2026-8400

Multiple Vulnerabilities in IBM® Java SDK affect IBM WebSphere Application Server and WebSphere Application Server Liberty due to the July 2026 CPU

CVSS 8.1 HighEPSS 0.0048 · 41st percentile

Published by the CVE Program (CNA: ibm) at 5 Aug 2026, 15:58 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
IBM WebSphere Application Server
  • affected 8.5
  • affected 9.0
IBM WebSphere Application Server - Liberty
  • affected Continuous delivery
Identifiers
CVE-2026-8400
CNA
ibm
Weakness (CWE)
CWE-470
Tags
Published
5 Aug 2026
Updated
6 Aug 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.1 High 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CNA (ibm)
  • CISA KEV Not listed.
  • EPSS 0.0048, the 41st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 5 Aug 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.