CVE-2026-71322
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
Lemur prior to 1.9.3 has a vulnerability in CertificateExport where the CertificatePermission ownership check was inside the plugin.requires_key branch. A plugin with requires_key false bypassed the check, and the handler still passed the private key and logged a key_view audit event. The fix does not pass private keys to plugins that do not require them.
Risk Assessment
The risk includes potential private key leakage in future plugins and misleading audit entries, potentially leading to unauthorized access to certificates.
Recommendation
Upgrade Lemur to version 1.9.3 or later and review plugin configurations.
Original NVD description (English source)
Lemur manages TLS certificate creation. Prior to 1.9.3, CertificateExport placed its CertificatePermission ownership check inside the plugin.requires_key branch for POST /api/1/certificates//export. A plugin declaring requires_key false bypassed that check, and the handler still passed cert.private_key as an argument and recorded a key_view audit event. The bundled JavaTruststoreExportPlugin ignored the key, so the immediate exposure was limited to public certificate material and misleading audit entries, but a future plugin could have consumed the supplied key. The fix passes no private key to plugins that do not require one and confines ownership checks and key_view logging to actual private-key exports. This issue is fixed in version 1.9.3.