IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a denial of service
Summary
| CVE | CVE-2026-4410 |
|---|---|
| State | PUBLISHED |
| Assigner | ibm |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-27 14:17:33 UTC |
| Updated | 2026-05-27 17:16:44 UTC |
| Description | IBM WebSphere Application Server - Liberty 19.0.0.7 through 26.0.0.5 and IBM WebSphere Application Server 9.0, and 8.5 and WebSphere Application Server Liberty are vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources. |
Risk And Classification
Primary CVSS: v3.1 4.8 MEDIUM from [email protected]
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.000440000 probability, percentile 0.137880000 (date 2026-05-29)
Problem Types: CWE-400 | CWE-400 CWE-400 Uncontrolled Resource Consumption
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 4.8 | MEDIUM | CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | CVSS | 4.8 | MEDIUM | CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
CVSS v3.1 Breakdown
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | IBM | WebSphere Application Server - Liberty | affected 19.0.0.7 26.0.0.5 semver | Not specified |
| CNA | IBM | WebSphere Application Server | affected 9.0 | Not specified |
| CNA | IBM | WebSphere Application Server | affected 8.5 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.ibm.com/support/pages/node/7273424 | [email protected] | www.ibm.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Additional Advisory Data
Solutions
CNA: IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH70807 and APAR PH70616. To determine if a feature is enabled for WebSphere Application Server Liberty, refer to How to determine if Liberty is using a specific feature https://www.ibm.com/support/pages/node/6553910 . For IBM WebSphere Application Server Liberty 19.0.0.7 - 26.0.0.5 using the sipServlet-1.1 feature: · Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH70807 https://www.ibm.com/support/pages/node/7273237 --OR-- · Apply Fix Pack 26.0.0.6 or later (targeted availability 2Q2026). For IBM WebSphere Application Server traditional: For V9.0.0.0 through 9.0.5.27: · Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH70616 https://www.ibm.com/support/pages/node/7269402 --OR-- · Apply Fix Pack 9.0.5.28 or later (targeted availability 2Q2026). For V8.5.0.0 through 8.5.5.29: · Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix that resolves PH70616 https://www.ibm.com/support/pages/node/7269402 --OR-- · Apply Fix Pack 8.5.5.30 or later (targeted availability 3Q2026). Additional interim fixes may be available and linked off the interim fix download page.