CVE-2026-56451

A vulnerability has been identified in Opcenter X (All versions < V2604). Affected applications do not properly validate the algorithm specified in the JSON Web Token (JWT) header. This could allow an unauthenticated remote attacker to forge arbitrary JWT, bypass authentication mechanisms and impersonate any user including administrative accounts, potentially gaining full unauthorized access to the application.

CVSS v3 10.0 CRITICAL

10.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://cert-portal.siemens.com/productcert/html/ssa-096828.html

Configurations

No configuration.

History

14 Jul 2026, 10:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-14 10:16

Updated : 2026-07-15 20:27

NVD link : CVE-2026-56451

Mitre link : CVE-2026-56451

CVE.ORG link : CVE-2026-56451

JSON object : View

Products Affected

No product.

CWE

CWE-347

Improper Verification of Cryptographic Signature

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