CVE-2026-93909

criticalpriority · track · 36EPSS 0.003 · 27 %ileDEFRUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.34% (27th) EPSS

CVSS 9.1 · critical

Is it mine?

6 products

Check your exposure

Who says so?

3 sources

cert_bund · nvd · certfr

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

9.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.3–9.1

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nprimary · psirt@us.ibm.com USexploitability 3.9 · impact 5.2

v3.18.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-384US

affected products (6)

Products and version ranges known to be affected.

IBM Business Automation Workflowall versionscert_bundDEcpe:/a:ibm:business_automation_workflow:-
IBM WebSphere Service Registry and Repositoryall versionscert_bundDEcpe:/a:ibm:websphere_service_registry_and_repository:-
IBM WebSphere Application Server< 8.5.5.32cert_bundDE
IBM WebSphere Application Server< 9.0.5.30cert_bundDE
IBM WebSphere Application Server Liberty< 26.0.0.11cert_bundDE
ibm websphere application server17.0.0.3 → 26.0.0.11nvdUScpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3909IBM WebSphere Application Server und Application Server Liberty: Mehrere SchwachstellenDeutsch2026-10-13csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in IBM WebSphere Application Server Liberty und IBM WebSphere Application Server ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Daten zu manipulieren und um Sicherheitsvorkehrungen zu umgehen.
CERTFR-2026-AVI-1336Multiples vulnérabilités dans les produits IBMFrançais2026-10-16vendor · certfrFR

sources

Which sources assert this record, and when.

cert_bund nvd certfr NVD CVE.org MITRE

published 2026-10-13modified 2026-10-22

references (1) nvd

External citations — patches, advisories, analysis.

https://www.ibm.com/support/pages/node/7292236Vendor Advisory

scry

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