CVE-2026-44304Public exploitNetwork attack vector

Administrator escalation via unescaped LDAP filters

Published May 12, 2026 · Updated May 12, 2026

LDAP injection in Netflix Lemur before 1.9.0 allows remote authenticated users to gain administrator privileges through the login username. The _bind() method in lemur/auth/ldap.py interpolates the username into a user lookup filter without escaping LDAP metacharacters, then builds a group query from the tainted result. Exploitation requires valid LDAP credentials and LDAP authentication with Active Directory group lookup enabled; successful injection exposes certificates, private keys, CA configuration, and certificate issuance.

CVSS severity8.1
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

LDAP injection in Netflix Lemur before 1.9.0 allows remote authenticated users to gain administrator privileges through the login username. The _bind() method in lemur/auth/ldap.py interpolates the username into a user lookup filter without escaping LDAP metacharacters, then builds a group query from the tainted result. Exploitation requires valid LDAP credentials and LDAP authentication with Active Directory group lookup enabled; successful injection exposes certificates, private keys, CA configuration, and certificate issuance.

The record

CVE
CVE-2026-44304
Published
May 12, 2026
Updated
May 12, 2026
Vendor
Netflix
Product
Lemur
Classifications
CWE-90, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 12, 2026CVE publishedPublication date reported by the CVE source.
  2. May 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Netflix · Lemurversion=< 1.9.0

Published CVSS scores

8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-90Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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