IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5, 9.0 IBM WebSphere Application Server and WebSphere Application Server Liberty are vulnerable to HTTP request smuggling in the Web Server Plug-ins through a specially crafted request.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- 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 | Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty | 8.5, 9.0 – Interim Fix 002 | — | No fix listed | CNA |
- Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty VendorIBM Affected 8.5, 9.0 – Interim Fix 002 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:-:*:*:* | 8.5.0.0 to before 8.5.5.30 | Vulnerable | IBM |
| cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:liberty:*:*:* | 8.5.0.0 to before 8.5.5.30 | Vulnerable | IBM |
| cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:-:*:*:* | 9.0.0.0 to before 9.0.5.28 | Vulnerable | IBM |
| cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:liberty:*:*:* | 9.0.0.0 to before 9.0.5.28 | Vulnerable | IBM |
- cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:-:*:*:* Versions 8.5.0.0 to before 8.5.5.30 Vulnerable ·IBM
- cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:liberty:*:*:* Versions 8.5.0.0 to before 8.5.5.30 Vulnerable ·IBM
- cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:-:*:*:* Versions 9.0.0.0 to before 9.0.5.28 Vulnerable ·IBM
- cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:liberty:*:*:* Versions 9.0.0.0 to before 9.0.5.28 Vulnerable ·IBM
Remediation
No fixed version listed by the sources yet.
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty — ibm.com/support/pages/node/7274072
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-07589 Code injection in IBM Web Server Plug-ins for WebSphere Application Server and WebSphere…Priority MEDIUM 51
Timeline
- 2026-10-02 Threatist record created from CVE-2026-8620
- 2026-10-03 Alias added: GHSA-qwgm-xj6f-w5v6
References
More IBM Websphere Application Server vulnerabilities
- TI-2015-06198 Serialized-object interfaces in certain IBM analytics, business solutions, cognitive, IT… KEVCVSS 3.1CRITICAL 9.8
- TI-2010-00403 modules/arch/win32/mod_isapi.c in mod_isapi in the Apache HTTP Server 2.0.37 through… CVSS 2.0HIGH 10.0
- TI-2019-03185 Deserialization of untrusted data in IBM WebSphere Application Server CVSS 3.1CRITICAL 9.8
- TI-2020-03809 Deserialization of untrusted data in IBM WebSphere Application Server CVSS 3.1CRITICAL 9.8
- TI-2025-24648 IBM WebSphere Application Server code execution CVSS 3.1CRITICAL 9.8
- TI-2020-03807 Deserialization of untrusted data in IBM WebSphere Application Server CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-8620 · CVE Program
- CVE-2026-8620 · NVD
- FIRST EPSS
- GHSA-qwgm-xj6f-w5v6 · GitHub Advisory Database · CC BY 4.0
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