CVE-2026-78323
Jss: jss: jsstrustmanager does not verify nss trust flags on ca certificates
What happened?
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 software and versions
| Software | Version information | Fixed version |
|---|---|---|
| redhat-pki:10/jssRed Hat | Default status: affected | See vendor advisory |
| jssRed Hat | Default status: affected | See vendor advisory |
| jssRed Hat | Default status: affected | See vendor advisory |
| jssRed Hat | Default status: unknown | See vendor advisory |
| jssRed Hat | Default status: unaffected | See vendor advisory |
| pki-core:10.6/jssRed Hat | Default status: unaffected | See vendor advisory |
| jssRed Hat | Default status: affected | See vendor advisory |
Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.
Is it being exploited?
This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.
How to respond
- Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
- Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
- Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.