IBM WebSphere Application Server Liberty is affected by a denial of service
Summary
| CVE | CVE-2026-10571 |
|---|---|
| State | PUBLISHED |
| Assigner | ibm |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-13 20:17:13 UTC |
| Updated | 2026-08-17 18:29:39 UTC |
| Description | IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is affected by a denial of service caused by insecure deserialization. A low-privileged, administrative user could exploit this vulnerability to consume system resources when the restConnector-2.0 feature is enabled. |
Risk And Classification
Primary CVSS: v3.1 5.3 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.005290000 probability, percentile 0.422870000 (date 2026-08-18)
Problem Types: CWE-502 | CWE-502 CWE-502 Deserialization of Untrusted Data
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 5.3 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | [email protected] | Secondary | 5.7 | MEDIUM | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | CVSS | 5.7 | MEDIUM | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Apple | Macos | - | All | All | All |
| Operating System | Ibm | Aix | - | All | All | All |
| Operating System | Ibm | I | - | All | All | All |
| Application | Ibm | Websphere Application Server | All | All | All | All |
| Operating System | Ibm | Z/os | - | All | All | All |
| Operating System | Linux | Linux Kernel | - | All | All | All |
| Operating System | Microsoft | Windows | - | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | IBM | WebSphere Application Server - Liberty | affected 17.0.0.3 26.0.0.8 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.ibm.com/support/pages/node/7283485 | [email protected] | www.ibm.com | Vendor Advisory |
| 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 DT497316. To determine if a feature is enabled for IBM 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 17.0.0.3 - 26.0.0.8 using the restConnector-2.0 feature(s): · Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves DT497316 https://www.ibm.com/support/pages/node/7283464 --OR-- · Apply Liberty Fix Pack 26.0.0.9 or later (targeted availability 3Q2026). Additional interim fixes may be available and linked off the interim fix download page.