SEPTEMBER 18, 2026
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Case File

CVE-2026-71322

MEDIUM · CVSS 4.3 EPSS 0.18% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-18 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The vulnerability affects the Lemur tool for managing TLS certificate creation in versions prior to 1.9.3, where improper handling of CertificatePermission checks allowed plugins that do not require a private key to potentially access sensitive key material. While immediate exposure was limited to public certificate data, the flaw could lead to future risks if a plugin were to misuse the private key. Organizations using Lemur for TLS management should prioritize updating to version 1.9.3 to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

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CVE
CVE-2026-71322
Severity
MEDIUM
CVSS
4.3
EPSS
0.18%
Java

Original NVD Description

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.