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CVE-2026-71322— Lemur: Missing authorization check on POST /certificates/<id>/export for plugins with requires_key = False

Quick assessment

Affected
Netflix lemur
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Netflix lemur是美国Netflix公司开源的一个证书管理工具。 Netflix lemur 1.9.3之前版本存在授权问题漏洞，该漏洞源于CertificateExport将证书所有权检查放在plugin.requires_key分支内，导致声明不要求密钥的插件绕过检查，并传递私钥参数及记录key_view审计事件，可能造成公开证书材料和误导性审计条目暴露，且未来插件可能使用所提供私钥。

CVSS 4.3 · Medium EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 1

VendorProduct Version RangeStatus
Netflix lemur < 1.9.3 affected
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I. Basic Information for CVE-2026-71322

Vulnerability Information
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Vulnerability Title
Lemur: Missing authorization check on POST /certificates/<id>/export for plugins with requires_key = False
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Netflix lemur 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Netflix lemur是美国Netflix公司开源的一个证书管理工具。 Netflix lemur 1.9.3之前版本存在授权问题漏洞，该漏洞源于CertificateExport将证书所有权检查放在plugin.requires_key分支内，导致声明不要求密钥的插件绕过检查，并传递私钥参数及记录key_view审计事件，可能造成公开证书材料和误导性审计条目暴露，且未来插件可能使用所提供私钥。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Netflix lemur < 1.9.3 -

II. Public POCs for CVE-2026-71322

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III. Intelligence Information for CVE-2026-71322

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Patches & Fixes for CVE-2026-71322 (1)

Vendor Advisories for CVE-2026-71322 (1)

Vendor Pages for CVE-2026-71322 (1)

Same Patch Batch · Netflix · 2026-08-18 · 14 CVEs total

CVE-2026-55166 9.9 CRITICAL Lemur: any SSO-authenticated user achieves AWS IAM compromise and permanent PKI key access
CVE-2026-48508 8.8 HIGH Lemur: Authorization bypass in StrictRolePermission / AuthorityCreatorPermission
CVE-2026-71308 8.1 HIGH Lemur: Unchecked `replaces[]` lets any user silence notifications and hijack auto-rotation
CVE-2026-71307 7.7 HIGH Lemur: Authenticated low-privilege users can read plaintext destination credentials (SFTP
CVE-2026-71303 7.7 HIGH Lemur: Incomplete fix for CVE-2026-55166 -- ACME authority update endpoint allows non-admi
CVE-2026-70666 7.4 HIGH Lemur: Server-Side Request Forgery via the ACME client following server-controlled URLs
CVE-2026-71417 7.3 HIGH Lemur: Any user can revoke arbitrary certificates at the CA by uploading a duplicate recor
CVE-2026-71317 6.5 MEDIUM Lemur: Sub-CA creation never checks `AuthorityPermission` on the parent authority
CVE-2026-70667 6.3 MEDIUM Lemur: SSRF protection in certificate revocation checking bypassable via HTTP redirects an
CVE-2026-55162 6.3 MEDIUM Lemur: Post-authentication SSRF via certificate verification - attacker-controlled CRL and
CVE-2026-55163 6.3 MEDIUM Lemur: Privilege escalation via PUT /api/1/roles/<id> — non-admin role members can rewrite
CVE-2026-55164 4.9 MEDIUM Lemur: Plaintext password storage in Lemur user-update path
CVE-2026-55165 4.8 MEDIUM Lemur : JWT verifier trusts attacker-supplied alg from token header — defense-in-depth gap

IV. Related Vulnerabilities

Same product: lemur
Same vendor: Netflix
Same weakness: CWE-862

V. Comments for CVE-2026-71322

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