---
id: CVE-2026-93907
title: >-
  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.
summary: >-
  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.
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-287
published: '2026-10-13'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T04:18:55.153'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93907'
references:
  - url: 'https://www.ibm.com/support/pages/node/7292216'
    label: psirt@us.ibm.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-13T14:29:01.865Z'
vendor: IBM
product: WebSphere Application Server
affected:
  - websphere_application_server 8.5
  - websphere_application_server 9.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-13T00:00:00+00:00'
epss: 0.0034
epssPercentile: 0.27377
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.