Vulnerability in IBM WebSphere Application Server - Liberty

[ Why it matters ]Priority signals

• Critical severity: CVSS 9.1

[ Description ]Official description

IBM WebSphere Application Server - Liberty 20.0.0.12 through 26.0.0.10 could allow an unauthenticated remote attacker to bypass access controls configured on gRPC service methods.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• CERT-FR16 Oct 2026CERTFR-2026-AVI-1336

  Multiple vulnerabilities in IBM products Translated from French

  Multiple vulnerabilities have been discovered in IBM products. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation and remote denial of service.

  CVE-2026-14671CVE-2026-11548CVE-2022-22950+490 more CVEs
• BSI CERT-Bund13 Oct 2026WID-SEC-2026-3909

  IBM WebSphere Application Server and Application Server Liberty: Multiple vulnerabilities Translated from German

  CVE-2026-101294CVE-2026-93909CVE-2026-93895+8 more CVEs

[ References ]References

• www.ibm.com/support/pages/node/7292228Vendor Advisory