CVE-2026-44305: medium-severity vulnerability in Netflix lemur
Lemur: LDAP TLS certificate verification globally disabled enables credential interception
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.8epss 0.1%
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.
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/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-2026-71307HIGHLemur: Authenticated low-privilege users can read plaintext destination credentials (SFTP password / private-key passphrase) via the destinations APIEPSS 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%