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CVE-2026-93909

9.1, critical

IBM WebSphere Application Server - Liberty Session Fixation Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
9.1, critical critical CVSS v3.1
EPSS, next 30 days
0.4% higher than 27.5% of scored CVEs
Exploitation
No public evidence
Published
13 Oct 20264 days ago

Description

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 is vulnerable by an authentication bypass vulnerability when samlWeb-2.0 feature is enabled.

Details

Vendor
IBM
Product
WebSphere Application Server - Liberty
Weakness
CWE-384 (opens in a new tab)
Status
Received
Updated
13 Oct 2026
Assigner
psirt@us.ibm.com

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other IBM CVEs

Every IBM CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-9198 IBM Langflow Code Injection Vulnerability KEV EPSS 29% 9.8, critical
  • CVE-2022-47986 IBM Aspera Faspex Code Execution Vulnerability KEV EPSS 100% 9.8, critical
  • CVE-2020-4427 IBM Data Risk Manager Security Bypass Vulnerability KEV EPSS 70% 9.8, critical
  • CVE-2020-4428 IBM Data Risk Manager Remote Code Execution Vulnerability KEV EPSS 62% 9.1, critical
  • CVE-2020-4430 IBM Data Risk Manager Directory Traversal Vulnerability KEV EPSS 69% 4.3, medium
  • CVE-2019-4716 IBM Planning Analytics Remote Code Execution Vulnerability KEV EPSS 86% 9.8, critical
  • CVE-2015-7450 IBM WebSphere Application Server and Server Hypervisor Edition Code Injection. KEV EPSS 98% 9.8, critical
  • CVE-2013-3993 IBM InfoSphere BigInsights Invalid Input Vulnerability KEV EPSS 5% 6.5, medium

Beyond this page

Is CVE-2026-93909 in your network?

This page tells you how dangerous CVE-2026-93909 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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    Detect it if it's exploited

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.