Skip to content
Noroxi
NVD / CVE Program· CNA ibm

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

Noroxi assessment

Priority: Monitor (action score 39/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.48% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: java-1.8.0-ibm (Red Hat:enterprise_linux:8::supplementary) 1:1.8.0.8.70-1.el8_10; java-1.8.0-ibm-demo (Red Hat:enterprise_linux:8::supplementary) 1:1.8.0.8.70-1.el8_10; java-1.8.0-ibm-devel (Red Hat:enterprise_linux:8::supplementary) 1:1.8.0.8.70-1.el8_10.

Low priority for now. Upgrade to java-1.8.0-ibm (Red Hat:enterprise_linux:8::supplementary) 1:1.8.0.8.70-1.el8_10; java-1.8.0-ibm-demo (Red Hat:enterprise_linux:8::supplementary) 1:1.8.0.8.70-1.el8_10; java-1.8.0-ibm-devel (Red Hat:enterprise_linux:8::supplementary) 1:1.8.0.8.70-1.el8_10 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSphere Application Server - Liberty Continuous delivery has a flaw in the ORB component in IBM SDK, Java Technology Edition, may allow a malicious IIOP server to induce loading and instantation of arbitrary classes.

CriticalCVSS 9.8 · v3.1—No exploit Fix available
Published
Aug 5, 2026
Updated
Aug 10, 2026
EPSS
0.4% · 41th percentile

Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
9.8
CNA · ibm
8.1
1.7 point gap

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-8400

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for ibm records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
ibmwebsphere application server

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • ibm websphere application serverall versions
  • ibm websphere application server8.5.0.0
  • ibm websphere application server9.0.0.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (ibm). Independent of NVD's CPE analysis and usually ahead of it.

  • IBM WebSphere Application Server

    • 8.5, 9.0affected

  • IBM WebSphere Application Server - Liberty

    • Continuous deliveryaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Red Hat:enterprise_linux:8::supplementaryjava-1.8.0-ibmbefore 1:1.8.0.8.70-1.el8_101:1.8.0.8.70-1.el8_10
Red Hat:enterprise_linux:8::supplementaryjava-1.8.0-ibm-demobefore 1:1.8.0.8.70-1.el8_101:1.8.0.8.70-1.el8_10
Red Hat:enterprise_linux:8::supplementaryjava-1.8.0-ibm-develbefore 1:1.8.0.8.70-1.el8_101:1.8.0.8.70-1.el8_10
Red Hat:enterprise_linux:8::supplementaryjava-1.8.0-ibm-headlessbefore 1:1.8.0.8.70-1.el8_101:1.8.0.8.70-1.el8_10
Red Hat:enterprise_linux:8::supplementaryjava-1.8.0-ibm-jdbcbefore 1:1.8.0.8.70-1.el8_101:1.8.0.8.70-1.el8_10
Red Hat:enterprise_linux:8::supplementaryjava-1.8.0-ibm-pluginbefore 1:1.8.0.8.70-1.el8_101:1.8.0.8.70-1.el8_10
Red Hat:enterprise_linux:8::supplementaryjava-1.8.0-ibm-srcbefore 1:1.8.0.8.70-1.el8_101:1.8.0.8.70-1.el8_10
Red Hat:enterprise_linux:8::supplementaryjava-1.8.0-ibm-webstartbefore 1:1.8.0.8.70-1.el8_101:1.8.0.8.70-1.el8_10
SUSE:Linux Enterprise Module for Legacy 15 SP7java-1_8_0-ibmbefore 1.8.0_sr8.70-150000.3.119.11.8.0_sr8.70-150000.3.119.1
SUSE:Linux Enterprise Module for Legacy 15 SP7java-1_8_0-ibmbefore 1.8.0_sr8.71-150000.3.125.11.8.0_sr8.71-150000.3.125.1
SUSE:Linux Enterprise Server 12 SP5-LTSSjava-1_8_0-ibmbefore 1.8.0_sr8.70-30.153.11.8.0_sr8.70-30.153.1
SUSE:Linux Enterprise Server 12 SP5-LTSSjava-1_8_0-ibmbefore 1.8.0_sr8.71-30.156.11.8.0_sr8.71-30.156.1

Same product

ibm: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-4279IBM WebSphere Application Server 8.5 and 9.0 could allow a remote attacker to execute arbitrary code on the system with a specially-crafted
    63This week
  • CVE-2020-4450IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specia
    49Plan
  • CVE-2025-36038IBM WebSphere Application Server code execution
    43Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-14980Jul 30, 2026 · IBM WebSphere Application Server Liberty is affected by a cross-site request forgery
    35Monitor
  • ← EarlierCVE-2026-11536Jul 30, 2026 · IBM WebSphere Application Server is affected by a remote code execution vulnerability
    34Monitor
  • Later →CVE-2026-18499Aug 12, 2026 · IBM WebSphere Application Server Liberty is affected by a privilege escalation
    32Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
red hat:java-1.8.0-ibm1:1.8.0.8.70-1.el8_10 · Red Hat:enterprise_linux:8::supplementaryPackage registry (OSV)
red hat:java-1.8.0-ibm-demo1:1.8.0.8.70-1.el8_10 · Red Hat:enterprise_linux:8::supplementaryPackage registry (OSV)
red hat:java-1.8.0-ibm-devel1:1.8.0.8.70-1.el8_10 · Red Hat:enterprise_linux:8::supplementaryPackage registry (OSV)
red hat:java-1.8.0-ibm-headless1:1.8.0.8.70-1.el8_10 · Red Hat:enterprise_linux:8::supplementaryPackage registry (OSV)
red hat:java-1.8.0-ibm-jdbc1:1.8.0.8.70-1.el8_10 · Red Hat:enterprise_linux:8::supplementaryPackage registry (OSV)
red hat:java-1.8.0-ibm-plugin1:1.8.0.8.70-1.el8_10 · Red Hat:enterprise_linux:8::supplementaryPackage registry (OSV)
red hat:java-1.8.0-ibm-src1:1.8.0.8.70-1.el8_10 · Red Hat:enterprise_linux:8::supplementaryPackage registry (OSV)
red hat:java-1.8.0-ibm-webstart1:1.8.0.8.70-1.el8_10 · Red Hat:enterprise_linux:8::supplementaryPackage registry (OSV)
suse:java-1_8_0-ibm1.8.0_sr8.70-30.153.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-470 · Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records