CVE-2026-78323

A flaw was found in JSS (Java Security Services). The JSSTrustManager class does not verify NSS trust flags when validating CA certificates, allowing certificates present in the NSS database without TRUSTED_CA flags to be accepted as trust anchors for TLS connections. In non-default configurations where certificate revocation checking is disabled, this could allow a man-in-the-middle attacker to forge certificates accepted by PKI client connections.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-78323
https://bugzilla.redhat.com/show_bug.cgi?id=2521775

Configurations

No configuration.

History

14 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) Se encontró una vulnerabilidad en JSS (Java Security Services). La clase JSSTrustManager no verifica los indicadores de confianza de NSS al validar certificados de CA, permitiendo que los certificados presentes en la base de datos de NSS sin indicadores TRUSTED_CA sean aceptados como anclas de confianza para conexiones TLS. En configuraciones no predeterminadas donde la verificación de revocación de certificados está deshabilitada, esto podría permitir a un atacante man-in-the-middle falsificar certificados aceptados por las conexiones de cliente PKI.

Information

Published : 2026-08-24 12:16

Updated : 2026-10-14 13:10

NVD link : CVE-2026-78323

Mitre link : CVE-2026-78323

CVE.ORG link : CVE-2026-78323

JSON object : View

Products Affected

No product.

CWE

CWE-295

Improper Certificate Validation

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