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CVE-2026-44304

8.1 · HIGH

Lemur manages TLS certificate creation.

Published May 12, 2026CWE-90EPSS 0.29%

Overview

CVE-2026-44304 is a high-severity vulnerability. It was published on May 12, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/Netflix/lemur/security/advisories/GHSA-3r34-vq8m-39ghGitHubgithub.com/Netflix/lemur/security/advisories/GHSA-3r34-vq8m-39gh

How CyberStrike helps

Frequently asked questions

What is CVE-2026-44304?

CVE-2026-44304 is a high-severity vulnerability. It was published on May 12, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-44304?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-44304?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-44304?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-44304 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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