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    CVE-2026-44304

    Lemur manages TLS certificate creation. Prior to 1.9.0, Lemur's LDAP authentication module (lemur/auth/ldap.py) constructs LDAP search filters using unsanitized user input via Python string interpolation. An authenticated LDAP user can inject LDAP filter metacharacters through the username field to manipulate group membership queries and escalate their privileges to administrator. This vulnerability is fixed in 1.9.0.

    Published:May 12, 2026
    Last Modified:May 14, 2026
    EPS:May 12, 2026
    EPSS Score:0.00023
    CVSS Score:8.1

    Affected Products

    Vendor
    Netflix
    Product
    Lemur

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-136 LDAP Injection

    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