CVE-2026-15064

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

At a glance

Severity: HIGH 8.7
EPSS: EPSS 0.34 % · percentile 27 (2026-10-27)
State: PUBLISHED
Published: 2026-07-28
Updated: 2026-09-23
Assigner: ibm
NVD status: Modified

Description

IBM WebSphere Application Server and IBM WebSphere Application Server - Liberty is vulnerable to HTTP Response Smuggling due to improper handling of non-standard HTTP version tokens.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 8.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N	ibm
CVSS 3.1	HIGH 8.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N	NVD · psirt@us.ibm.com (Secondary)

Weaknesses (CWE)

CWE-444

European references

ENISA EUVD · EUVD-2026-50024
GCVE · GCVE-0-2026-15064

CERT-FR advisories

CERTFR-2026-AVI-1206 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2026-AVI-1165 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2026-AVI-1094 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2026-AVI-0986 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2026-AVI-0958 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:* ≥ 8.5.0.0 < 8.5.5.31
cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:* ≥ 9.0.0.0 < 9.0.5.29
cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:liberty:*:*:* ≥ 17.0.0.3 < 26.0.0.8

Affected products

Product	Versions
IBM · WebSphere Application Server	affected 9.0 ; affected 8.5
IBM · WebSphere Application Server - Liberty	affected 17.0.0.3 ≤ 26.0.0.7

References

https://www.ibm.com/support/pages/node/7281625

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD