CVE-2026-71307: high-severity vulnerability in Netflix lemur
Lemur: Authenticated low-privilege users can read plaintext destination credentials (SFTP password / private-key passphrase) via the destinations API
Published
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.7epss 0.3%
Lemur manages TLS certificate creation. Prior to 1.9.3, GET /api/1/destinations and GET /api/1/destinations/ relied only on authentication while sibling write handlers required admin_permission. DestinationOutputSchema returned raw options and copied them into pluginOptions without redacting sensitive values. The sftp-destination plugin stored password and privateKeyPass values in plaintext, allowing even a read-only user to retrieve credentials for remote certificate-deployment hosts. The exposed credentials could permit direct access to SFTP systems and TLS material outside the Lemur security boundary. The fix requires administrator permission for destination reads and redacts options marked sensitive. This issue is fixed in version 1.9.3.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Affected products
Netflix · lemurRelated CVEs — Netflix lemur
In the same product, most dangerous first.
CVE-2026-48508HIGHLemur: Authorization bypass in StrictRolePermission / AuthorityCreatorPermissionEPSS 0.3%CVE-2026-71308HIGHLemur: Unchecked `replaces[]` lets any user silence notifications and hijack auto-rotation for arbitrary certificatesEPSS 0.3%CVE-2026-55164MEDIUMLemur: Plaintext password storage in Lemur user-update pathEPSS 0.3%CVE-2026-55166CRITICALLemur: any SSO-authenticated user achieves AWS IAM compromise and permanent PKI key access via ACME acme_url SSRF and creator-equality IDOREPSS 0.3%CVE-2026-71303HIGHLemur: Incomplete fix for CVE-2026-55166 -- ACME authority update endpoint allows non-admin to replace `acme_url` with internal IP, bypassing allowlistEPSS 0.3%CVE-2026-71322MEDIUMLemur: Missing authorization check on POST /certificates/<id>/export for plugins with requires_key = FalseEPSS 0.2%