CVE-2026-71317

Netflix Lemur before 1.9.3 allowed any authenticated non-read-only user to create a sub-CA chained to an internal root they lacked permission for, since AuthorityPermission was never checked on the parent authority when ADMIN_ONLY_AUTHORITY_CREATION was false. The resulting intermediate's private...

EUVD-2026-61155

Lemur manages TLS certificate creation. Prior to 1.9.3, an authority-role member could update acmeurl through PUT /api/1/authorities/ without revalidation and direct setupacmeclientnoretry to an attacker-controlled ACME server. ACME directory and order responses contain newNonce, newOrder,...

CVE-2026-70666 Lemur: Server-Side Request Forgery via the ACME client following server-controlled URLs

Lemur manages TLS certificate creation. Prior to 1.9.3, an authority-role member could update acmeurl through PUT /api/1/authorities/ without revalidation and direct setupacmeclientnoretry to an attacker-controlled ACME server. ACME directory and order responses contain newNonce, newOrder,...

CVE-2026-70666

CVE-2026-70666 is a Server-Side Request Forgery (SSRF) in Lemur (Netflix's TLS certificate manager), rated CVSS 7.4 HIGH . Two defects combine: the acme_url allowlist is validated only at authority creation, not on the PUT /api/1/authorities/ update path, and the ACME client follows server-suppli...

CVE-2026-70666 Lemur: Server-Side Request Forgery via the ACME client following server-controlled URLs

Lemur manages TLS certificate creation. Prior to 1.9.3, an authority-role member could update acmeurl through PUT /api/1/authorities/ without revalidation and direct setupacmeclientnoretry to an attacker-controlled ACME server. ACME directory and order responses contain newNonce, newOrder,...

CVE-2026-71303 Lemur: Incomplete fix for CVE-2026-55166 -- ACME authority update endpoint allows non-admin to replace `acme_url` with internal IP, bypassing allowlist

Lemur manages TLS certificate creation. Prior to 1.9.3, validateacmeurl enforced ACMEDIRECTORYHOSTALLOWLIST when an authority was created, but PUT /api/1/authorities/ passed options to lemur/authorities/service.py without applying the same check. A user holding an authority role could replace the...

CVE-2026-71303

In Lemur prior to 1.9.3, the PUT /api/1/authorities/ endpoint skipped the ACME_DIRECTORY_HOST_ALLOWLIST check applied at creation, letting any authority-role user set an internal or instance-metadata URL as the stored acme_url; the next issuance then made an outbound request via ClientV2.get_dire...

CVE-2026-71303 Lemur: Incomplete fix for CVE-2026-55166 -- ACME authority update endpoint allows non-admin to replace `acme_url` with internal IP, bypassing allowlist

Lemur manages TLS certificate creation. Prior to 1.9.3, validateacmeurl enforced ACMEDIRECTORYHOSTALLOWLIST when an authority was created, but PUT /api/1/authorities/ passed options to lemur/authorities/service.py without applying the same check. A user holding an authority role could replace the...

EUVD-2026-61154

Lemur manages TLS certificate creation. Prior to 1.9.3, validateacmeurl enforced ACMEDIRECTORYHOSTALLOWLIST when an authority was created, but PUT /api/1/authorities/ passed options to lemur/authorities/service.py without applying the same check. A user holding an authority role could replace the...

CVE-2026-71307 Lemur: Authenticated low-privilege users can read plaintext destination credentials (SFTP password / private-key passphrase) via the destinations API

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 adminpermission. DestinationOutputSchema returned raw options and copied them into pluginOptions without redacting...

EUVD-2026-61153

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 adminpermission. DestinationOutputSchema returned raw options and copied them into pluginOptions without redacting...

CVE-2026-71307 Lemur: Authenticated low-privilege users can read plaintext destination credentials (SFTP password / private-key passphrase) via the destinations API

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 adminpermission. DestinationOutputSchema returned raw options and copied them into pluginOptions without redacting...

CVE-2026-71307

In Lemur before 1.9.3, GET /api/1/destinations endpoints required only basic authentication, allowing low-privilege users to read plaintext SFTP passwords and private-key passphrases stored by the sftp-destination plugin. CVSS 7.7 HIGH (network, low complexity). Fixed in 1.9.3 by requiring admin ...

CVE-2026-71308

Netflix Lemur versions 0.5.0 through 1.9.2 accept unauthenticated replaces[] identifiers, allowing an authenticated non-read-only user to silence victim certificate notifications, exclude them from reissue rotation, and substitute attacker-controlled certificates at scale. CVSS 8.1 (HIGH). Fixed ...

CVE-2026-71308 Lemur: Unchecked `replaces[]` lets any user silence notifications and hijack auto-rotation for arbitrary certificates

Lemur manages TLS certificate creation. From 0.5.0 until 1.9.3, certificate create, upload, and edit requests accepted replaces or replacements identifiers that AssociatedCertificateSchema resolved with fetchobjects without a CertificatePermission check. Assigning those objects to...

CVE-2026-71308 Lemur: Unchecked `replaces[]` lets any user silence notifications and hijack auto-rotation for arbitrary certificates

Lemur manages TLS certificate creation. From 0.5.0 until 1.9.3, certificate create, upload, and edit requests accepted replaces or replacements identifiers that AssociatedCertificateSchema resolved with fetchobjects without a CertificatePermission check. Assigning those objects to...

EUVD-2026-61152

Lemur manages TLS certificate creation. From 0.5.0 until 1.9.3, certificate create, upload, and edit requests accepted replaces or replacements identifiers that AssociatedCertificateSchema resolved with fetchobjects without a CertificatePermission check. Assigning those objects to...

EUVD-2026-61151

Lemur manages TLS certificate creation. Prior to 1.9.3, validaterevocationurl in lemur/certificates/verify.py checked the original CRL or OCSP URL but the later request could reach a different destination. The CRL requests.get call followed HTTP redirects without validating each Location target, ...

CVE-2026-70667 Lemur: SSRF protection in certificate revocation checking bypassable via HTTP redirects and DNS rebinding (incomplete fix for CVE-2026-55162)

Lemur manages TLS certificate creation. Prior to 1.9.3, validaterevocationurl in lemur/certificates/verify.py checked the original CRL or OCSP URL but the later request could reach a different destination. The CRL requests.get call followed HTTP redirects without validating each Location target, ...

CVE-2026-70667 Lemur: SSRF protection in certificate revocation checking bypassable via HTTP redirects and DNS rebinding (incomplete fix for CVE-2026-55162)

Lemur manages TLS certificate creation. Prior to 1.9.3, validaterevocationurl in lemur/certificates/verify.py checked the original CRL or OCSP URL but the later request could reach a different destination. The CRL requests.get call followed HTTP redirects without validating each Location target, ...