CVE-2026-78323 MEDIUM

CVE-2026-78323: Jss: jss: jsstrustmanager does not verify nss trust flags on ca certificates

Vendor Red Hat
Product Red Hat Certificate System 10
Weakness CWE-295
Published August 24, 2026
Last update August 24, 2026

CVSS base score

6.5/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 24, 2026 CVE published
August 24, 2026 Record updated