Vulnerability Description
IBM WebSphere Application Server 9.0 and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are vulnerable to HTTP request smuggling. A remote attacker could smuggle a specially crafted request to the application server thereby allowing the attacker to bypass security controls, spoof identity, escalate privilege, and expose sensitive information.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ibm | Websphere Application Server | >= 8.5.0.0, < 8.5.5.30 |
| Apple | Macos | - |
| Ibm | Aix | - |
| Ibm | I | - |
| Ibm | Z\/Os | - |
| Linux | Linux Kernel | - |
| Microsoft | Windows | - |
Related Weaknesses (CWE)
References
- https://www.ibm.com/support/pages/node/7276579Vendor Advisory
FAQ
What is CVE-2026-8646?
CVE-2026-8646 is a vulnerability with a CVSS score of 7.4 (HIGH). IBM WebSphere Application Server 9.0 and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are vulnerable to HTTP request smuggling. A remote attacker could smuggle a specia...
How severe is CVE-2026-8646?
CVE-2026-8646 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-8646?
Check the references section above for vendor advisories and patch information. Affected products include: Ibm Websphere Application Server, Apple Macos, Ibm Aix, Ibm I, Ibm Z\/Os.