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GHSA-q672-hfc7-g833

CriticalCVSS 9.3 / 10
Published Feb 10, 2026·Last modified Feb 22, 2026
Affected Components(0)

No affected components available

Description

Affected Products and Versions

  • Apache Druid
  • Affected Versions: 0.17.0 through 35.x (all versions prior to 36.0.0)
  • Prerequisites: * druid-basic-security extension enabled
  • LDAP authenticator configured
  • Underlying LDAP server permits anonymous bind                                                                                                                                                   

Vulnerability Description

An authentication bypass vulnerability exists in Apache Druid when using the druid-basic-security extension with LDAP authentication. If the underlying LDAP server is configured to allow anonymous binds, an attacker can bypass authentication by providing an existing username with an empty password. This allows unauthorized access to otherwise restricted Druid resources without valid credentials.

The vulnerability stems from improper validation of LDAP authentication responses when anonymous binds are permitted, effectively treating anonymous bind success as valid user authentication.

Impact

A remote, unauthenticated attacker can:

  • Gain unauthorized access to the Apache Druid cluster
  • Access sensitive data stored in Druid datasources
  • Execute queries and potentially manipulate data
  • Access administrative interfaces if the bypassed account has elevated privileges
  • Completely compromise the confidentiality, integrity, and availability of the Druid deployment                                                                                                                                                                                    

Mitigation   Immediate Mitigation (No Druid Upgrade Required):                                                                                                                                                  

  • Disable anonymous bind on your LDAP server. This prevents the vulnerability from being exploitable and is the recommended immediate action.

Resolution

  • Upgrade Apache Druid to version 36.0.0 or later, which includes fixes to properly reject anonymous LDAP bind attempts.
Risk Scores
Base Score
9.3

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence
8.1

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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Critical severity
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