CVE-2026-56451 PUBLISHED

Assigner: siemens
Reserved: 22.06.2026 Published: 14.07.2026 Updated: 14.07.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:H/SA:H
CVSS Score: 10

Product Status

Vendor Siemens
Product Opcenter X
Versions Default: unknown
  • affected from 0 to V2604 (excl.)

References

Problem Types

  • CWE-347: Improper Verification of Cryptographic Signature CWE