CVE-2026-15064

HIGH

IBM WebSphere Application Server and Liberty - HTTP Response Smuggling

Title source: manual
STIX 2.1

Description

IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to HTTP Response Smuggling due to improper handling of non-standard HTTP version tokens.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
https://www.ibm.com/support/pages/node/7281625

Scores

CVSS v3 8.7
EPSS 0.0022
EPSS Percentile 12.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-444
Status published
Products (3)
IBM/WebSphere Application Server 8.5
IBM/WebSphere Application Server 9.0
IBM/WebSphere Application Server - Liberty 17.0.0.3 - 26.0.0.7
Published Jul 28, 2026
Tracked Since Jul 29, 2026