Denial of service in IBM WebSphere Application Server and Liberty
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-400.
Summary
IBM WebSphere Application Server - Liberty from 17.0.0.3 through 26.0.0.10 and IBM WebSphere Application Server 8.5 and 9.0 are affected. Uncontrolled resource consumption (CWE-400) lets a remote unauthenticated attacker exhaust server resources and cause a denial of service.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Description from the CNA
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 and IBM WebSphere Application Server 8.5, and 9.0 Liberty could allow a remote unauthenticated attacker to cause a denial of service due to uncontrolled resource consumption.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| IBM | WebSphere Application Server - Liberty | 17.0.0.3 – 26.0.0.10 | — | No fix listed | CNA |
| IBM | WebSphere Application Server | 8.5; 9.0 | — | No fix listed | CNA |
- WebSphere Application Server - Liberty VendorIBM Affected 17.0.0.3 – 26.0.0.10 Fixed in — No fix listed CNA
- WebSphere Application Server VendorIBM Affected 8.5; 9.0 Fixed in — No fix listed CNA
CPE names CNA · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:* | 17.0.0.3 | — | IBM |
| cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.10:*:*:*:*:*:*:* | 26.0.0.10 | — | IBM |
| cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:* | 8.5 | — | IBM |
| cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:* | 8.5.0 | — | IBM |
| cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:* | 9.0 | — | IBM |
| cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:* | 9.0.0 | — | IBM |
- cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:* Versions 17.0.0.3 — ·IBM
- cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.10:*:*:*:*:*:*:* Versions 26.0.0.10 — ·IBM
- cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:* Versions 8.5 — ·IBM
- cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:* Versions 8.5.0 — ·IBM
- cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:* Versions 9.0 — ·IBM
- cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:* Versions 9.0.0 — ·IBM
Remediation
The sources list no fixed version for IBM WebSphere Application Server - Liberty. The sources list no fixed version for IBM WebSphere Application Server.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Timeline
- 2026-10-13 Threatist record created from CVE-2026-103499
- 2026-10-13 Alias added: GHSA-hqx9-hfrg-3qwc
References
More IBM vulnerabilities
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Sources
- CVE-2026-103499 · CVE Program
- CVE-2026-103499 · NVD
- FIRST EPSS
- GHSA-hqx9-hfrg-3qwc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences