What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-24 · updated 2026-10-14
• Weakness: CWE-295

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.

Affected products

• Red Hat Certificate System 10: all versions
• Red Hat Certificate System 11: all versions
• Red Hat Enterprise Linux 10: all versions
• Red Hat Enterprise Linux 9: all versions

References

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

Get alerted when CVE-2026-78323 or the next vulnerability affects your stack