CVE-2026-93907

IBM WebSphere Application Server is affected by a bypass authentication vulnerability

At a glance

Severity: HIGH 8.1
EPSS: EPSS 0.34 % · percentile 27 (2026-10-27)
State: PUBLISHED
Published: 2026-10-13
Updated: 2026-10-14
Assigner: ibm
NVD status: Awaiting Analysis

Description

IBM WebSphere Application Server 8.5, and 9.0 could allow a remote attacker to bypass authentication by exploiting a flaw in the CSIv2 inbound propagation handler.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	ibm
CVSS 3.1	HIGH 8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · psirt@us.ibm.com (Secondary)

Weaknesses (CWE)

CWE-287

European references

ENISA EUVD · EUVD-2026-98688
GCVE · GCVE-0-2026-93907

CERT-FR advisories

CERTFR-2026-AVI-1336 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr

Affected products

Product	Versions
IBM · WebSphere Application Server	affected 8.5 ; affected 9.0

References

https://www.ibm.com/support/pages/node/7292216

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