by Kastro
Paper/Archive/CVE-2026-8646

CVE-2026-8646

IBM WebSphere Application Server — IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities

EPSS 0.6%CVSS 9.1
critical.is priorityof 100
37
CVSS 9.1 (NVD)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 48.1.481 × 209.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
WebSphere Application Server9.0.0 – 7.0.2 Interim Fix 035–CNA
WebSphere Application Server8.5.0 – 7.0.3 Interim Fix 017–CNA
WebSphere Application Server - Liberty17.0.0.3 – 26.0.0.6–CNA

Scores by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
ibm (CNA)7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

patchibm.com/support/pages/node/7276579