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.
History

Mon, 24 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 24 Aug 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 24 Aug 2026 11:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Jss: jss: jsstrustmanager does not verify nss trust flags on ca certificates
First Time appeared Redhat
Redhat certificate System
Redhat enterprise Linux
Weaknesses CWE-295
CPEs cpe:/a:redhat:certificate_system:10
cpe:/a:redhat:certificate_system:11
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat certificate System
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-24T11:50:28.901Z

Reserved: 2026-08-24T09:04:49.283Z

Link: CVE-2026-78323

cve-icon Vulnrichment

Updated: 2026-08-24T11:50:24.464Z

cve-icon NVD

Status : Received

Published: 2026-08-24T12:16:56.250

Modified: 2026-08-24T12:16:56.250

Link: CVE-2026-78323

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-08-24T09:07:55Z

Links: CVE-2026-78323 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-24T12:30:16Z