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CVE-2026-1529
Java vulnerability analysis and mitigation

A flaw was found in Keycloak. An attacker can exploit this vulnerability by modifying the organization ID and target email within a legitimate invitation token's JSON Web Token (JWT) payload. This lack of cryptographic signature verification allows the attacker to successfully self-register into an unauthorized organization, leading to unauthorized access.


SourceNVD

Related Java vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-34361CRITICAL9.3
  • JavaJava
  • ca.uhn.hapi.fhir:org.hl7.fhir.validation
NoYesMar 30, 2026
CVE-2026-34214HIGH7.7
  • JavaJava
  • trino
NoYesMar 29, 2026
CVE-2026-34359HIGH7.4
  • JavaJava
  • ca.uhn.hapi.fhir:org.hl7.fhir.core
NoYesMar 30, 2026
CVE-2026-34237MEDIUM6.1
  • JavaJava
  • io.modelcontextprotocol.sdk:mcp-core
NoYesMar 30, 2026
CVE-2026-34360MEDIUM5.8
  • JavaJava
  • ca.uhn.hapi.fhir:org.hl7.fhir.core
NoYesMar 30, 2026

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