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.
Advisories
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-3r34-vq8m-39gh | Lemur: LDAP Filter Injection enables post-authentication privilege escalation |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 13 May 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Netflix
Netflix lemur |
|
| Vendors & Products |
Netflix
Netflix lemur |
Tue, 12 May 2026 22:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Lemur: LDAP Filter Injection enables post-authentication privilege escalation | |
| Weaknesses | CWE-90 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-12T21:27:28.118Z
Reserved: 2026-05-05T17:39:31.113Z
Link: CVE-2026-44304
No data.
Status : Deferred
Published: 2026-05-12T22:16:37.140
Modified: 2026-05-13T18:11:50.600
Link: CVE-2026-44304
No data.
OpenCVE Enrichment
Updated: 2026-05-13T00:00:16Z
Weaknesses
Github GHSA