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    CVE-2026-44305

    Lemur manages TLS certificate creation. Prior to 1.9.0, when LDAP TLS is enabled (LDAP_USE_TLS = True), Lemur's LDAP authentication module unconditionally disables TLS certificate verification at the global ldap module level. This allows a man-in-the-middle attacker positioned between Lemur and the LDAP server to intercept all authentication credentials. This vulnerability is fixed in 1.9.0.

    Published:May 12, 2026
    Last Modified:May 13, 2026
    EPS:May 12, 2026
    EPSS Score:
    CVSS Score:6.8

    Affected Products

    Vendor
    Netflix
    Product
    Lemur

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-295 Improper Certificate Validation

    Related CVEs

    CVE-2026-71417 (CVSS 7.3) — Lemur manages TLS certificate creation. Prior to 1.9.3, POST /api/1/certificates/upload allowed a non-read-onl…
    CVE-2026-71322 (CVSS 4.3) — Lemur manages TLS certificate creation. Prior to 1.9.3, CertificateExport placed its CertificatePermission own…
    CVE-2026-71317 (CVSS 6.5) — Lemur manages TLS certificate creation. Prior to 1.9.3, POST /api/1/authorities with type=subca did not requir…
    CVE-2026-70666 (CVSS 7.4) — Lemur manages TLS certificate creation. Prior to 1.9.3, an authority-role member could update acme_url through…
    CVE-2026-71303 (CVSS 7.7) — Lemur manages TLS certificate creation. Prior to 1.9.3, _validate_acme_url enforced ACME_DIRECTORY_HOST_ALLOWL…
    CVE-2026-71307 (CVSS 7.7) — Lemur manages TLS certificate creation. Prior to 1.9.3, GET /api/1/destinations and GET /api/1/destinations/ r…
    CVE-2026-71308 (CVSS 8.1) — Lemur manages TLS certificate creation. From 0.5.0 until 1.9.3, certificate create, upload, and edit requests …
    CVE-2026-70667 (CVSS 6.3) — Lemur manages TLS certificate creation. Prior to 1.9.3, _validate_revocation_url in lemur/certificates/verify.…
    CVE-2026-55164 (CVSS 4.9) — Lemur manages TLS certificate creation. Prior to 1.9.2, lemur.users.service.update assigned a replacement pass…
    CVE-2026-55162 (CVSS 6.3) — Lemur manages TLS certificate creation. Prior to 1.9.2, lemur/certificates/verify.py accepted CRL Distribution…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High