Lemur: LDAP Filter Injection enables post-authentication privilege escalation_CVE-2026-44304

8.1 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

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.

Basic Information

ID CVE-2026-44304

Source GitHub_M

Published May 12, 2026 at 21:27

Affected Product

Vendor Netflix

Product lemur

Version < 1.9.0

Affected Versions Netflix lemur < 1.9.0

CWE Classification

CWE-90

References

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

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    "published": "2026-05-12T21:27:28.118Z",
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