CVE-2026-44305 Netflix CVE debrief

Who should care

Defenders responsible for configuring and maintaining Lemur's LDAP authentication module should assess exposure and take action to upgrade to version 1.9.0 or later. This includes reviewing and updating configurations to ensure secure authentication and verifying exposure to the vulnerability. Additionally, defenders should prioritize verifying exposure and upgrading to version 1.9.0 or later to prevent credential interception and unauthorized access.

Why it matters

Defenders should prioritize verifying exposure and upgrading to version 1.9.0 or later to prevent credential interception and unauthorized access.

• Intercepted authentication credentials can lead to unauthorized access
• Man-in-the-middle attacks can compromise authentication security

Technical summary

Lemur's LDAP authentication module unconditionally disables TLS certificate verification at the global ldap module level when LDAP TLS is enabled. This allows a man-in-the-middle attacker positioned between Lemur and the LDAP server to intercept all authentication credentials. The issue is fixed in version 1.9.0. The vulnerability is caused by a logic error in the LDAP authentication module. The error occurs when LDAP TLS is enabled, causing the module to disable TLS certificate verification. This makes it possible for an attacker to intercept authentication credentials.

Defensive priority

Defenders should prioritize verifying exposure and upgrading to version 1.9.0 or later.

Recommended defensive actions

• Verify if LDAP TLS is enabled and upgrade to version 1.9.0 or later
• Review and update configurations to ensure secure authentication
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and NVD vulnerability detail page provide information on the vulnerability and its fix. The vulnerability is confirmed to exist in versions prior to 1.9.0. There are no known instances of this vulnerability being exploited. However, defenders should verify exposure and take action to upgrade to version 1.9.0 or later. The CVE record and NVD detail page provide additional context on the vulnerability and its potential impact.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.