Signature verification bypass in IBM WebSphere Application Server
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
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. Improper verification of a cryptographic signature (CWE-325) lets a remote attacker bypass signature verification. The attack complexity is high, and the attacker needs no privileges and no user interaction.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
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 could allow a remote attacker to bypass cryptographic signature verification due to improper verification of cryptographic signature.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 · 2026-10-28
Timeline
- 2026-10-13 Threatist record created from CVE-2026-101294
- 2026-10-13 Alias added: GHSA-7vhc-cw8q-ggpm
- 2026-10-14 CISA SSVC decision points changed
- 2026-10-14 Priority changed: MEDIUM → LOW
References
More IBM vulnerabilities
- TI-2026-08085 Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation KEVCVSS 3.1CRITICAL 9.8
- TI-2022-23774 IBM Aspera Faspex code execution KEVCVSS 3.1CRITICAL 9.8
- TI-2020-03794 Improper authentication in IBM Data Risk Manager KEVCVSS 3.1CRITICAL 9.8
- TI-2019-03441 Code injection in IBM Planning Analytics KEVCVSS 3.1CRITICAL 9.8
- TI-2017-03639 Improper handling of exceptional conditions in Apache Struts KEVCVSS 3.1CRITICAL 9.8
- TI-2015-06198 Serialized-object interfaces in certain IBM analytics, business solutions, cognitive, IT… KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-101294 · CVE Program
- CVE-2026-101294 · NVD
- FIRST EPSS
- GHSA-7vhc-cw8q-ggpm · 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