CVE-2021-26919

Apache Druid Authenticated users can execute arbitrary code from malicious MySQL database systems.

HIGH
8.8
CVSS Score
Published: March 30, 2021 at 07:50 AM UTC
Updated: June 17, 2026 at 03:44 AM UTC
1 product affected across 1 vendorDruid

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Severity
HIGH8.8
Exploit prediction
EPSS 35%

Description

Apache Druid allows users to read data from other database systems using JDBC. This functionality is to allow trusted users with the proper permissions to set up lookups or submit ingestion tasks. The MySQL JDBC driver supports certain properties, which, if left unmitigated, can allow an attacker to execute arbitrary code from a hacker-controlled malicious MySQL server within Druid server processes. This issue was addressed in Apache Druid 0.20.2

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.20.2Apache Druid ≤ v ≤ 0.20.1
Affected range stops below 0.20.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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