---
title: "CVE-2021-25646: Authenticated users can override system… | CubePath"
description: "Apache Druid includes the ability to execute user-provided JavaScript code embedded in various types of requests. This functionality is intended for use…"
language: en
source: https://cubepath.com/security/cve/CVE-2021-25646
---

# CVE-2021-25646: Authenticated users can override system… | CubePath

## Description

Apache Druid includes the ability to execute user-provided JavaScript code embedded in various types of requests. This functionality is intended for use in high-trust environments, and is disabled by default. However, in Druid 0.20.0 and earlier, it is possible for an authenticated user to send a specially-crafted request that forces Druid to run user-provided JavaScript code for that request, regardless of server configuration. This can be leveraged to execute code on the target machine with the privileges of the Druid server process.

Official description from the CVE record, published by apache. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-25646)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.99062 (99.1% probability)

Percentile

99.9%

Scores of

Nov 10, 2026

Model

v2026.06.15

## Affected products

Products listed in the CVE record, as the CNA published them.

- Apache Druid

  - affected: 0.20.0 and earlier up to 0.20.0

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [lists.apache.org/thread.html/rfda8a3aa6ac06a80c5cbfdeae0fc8…](https://lists.apache.org/thread.html/rfda8a3aa6ac06a80c5cbfdeae0fc85f88a5984e32ea05e6dda46f866%40%3Cdev.druid.apache.org%3E)
- [\[oss-security\] 20210129 CVE-2021-25646: Authenticated users can override system configurations in their requests which allows them to execute arbitrary code.](http://www.openwall.com/lists/oss-security/2021/01/29/6)  (openwall.com) mailing-list
- [\[druid-dev\] 20210129 Re: \[druid-user\] Re: CVE-2021-25646: Authenticated users can override system configurations in their requests which allows them to execute arbitrary code.](https://lists.apache.org/thread.html/r64431c2b97209f566b5dff92415e7afba0ed3bfab4695ebaa8a62e5d%40%3Cdev.druid.apache.org%3E)  (lists.apache.org) mailing-list
- [\[druid-dev\] 20210129 Re: CVE-2021-25646: Authenticated users can override system configurations in their requests which allows them to execute arbitrary code.](https://lists.apache.org/thread.html/rc167d5e57f3120578718a7a458ce3e73b3830ac4efbb1b085bd06b92%40%3Cdev.druid.apache.org%3E)  (lists.apache.org) mailing-list
- [\[announce\] 20210129 Subject: \[CVE-2021-25646\] Apache Druid remote code execution vulnerability](https://lists.apache.org/thread.html/r20e0c3b10ae2c05a3aad40f1476713c45bdefc32c920b9986b941d8f%40%3Cannounce.apache.org%3E)  (lists.apache.org) mailing-list
- [\[druid-commits\] 20210204 \[GitHub\] \[druid\] jihoonson merged pull request #10818: Fix CVE-2021-25646](https://lists.apache.org/thread.html/r4f84b542417ea46202867c0a8b3eaf3b4cfed30e09174a52122ba210%40%3Ccommits.druid.apache.org%3E)  (lists.apache.org) mailing-list
- [\[druid-commits\] 20210204 \[GitHub\] \[druid\] jihoonson commented on pull request #10818: Fix CVE-2021-25646](https://lists.apache.org/thread.html/rea9436a4063927a567d698431ddae55e760c3f876c22ac5b9813685f%40%3Ccommits.druid.apache.org%3E)  (lists.apache.org) mailing-list
- [\[druid-commits\] 20210204 \[GitHub\] \[druid\] jihoonson opened a new pull request #10854: \[Backport\] Fix CVE-2021-25646](https://lists.apache.org/thread.html/r121abe8014d381943b63c60615149d40bde9dc1c868bcee90d0d0848%40%3Ccommits.druid.apache.org%3E)  (lists.apache.org) mailing-list
- [\[druid-commits\] 20210204 \[druid\] branch 0.21.0 updated: Fix CVE-2021-25646 (#10818) (#10854)](https://lists.apache.org/thread.html/rfeb775822cd3baef1595b60f6860f5ca849eb1903236483f3297bd5c%40%3Ccommits.druid.apache.org%3E)  (lists.apache.org) mailing-list
- [\[druid-commits\] 20210204 \[GitHub\] \[druid\] jihoonson merged pull request #10854: \[Backport\] Fix CVE-2021-25646](https://lists.apache.org/thread.html/r04fa1ba93599487c95a8497044d37f8c02a439bfcf92b4567bfb7c8f%40%3Ccommits.druid.apache.org%3E)  (lists.apache.org) mailing-list
- [\[druid-commits\] 20210205 \[GitHub\] \[druid\] jihoonson opened a new pull request #10854: \[Backport\] Fix CVE-2021-25646](https://lists.apache.org/thread.html/r87aa94e28dd21ee2252d30c63f01ab9cb5474ee5bdd98dd8d7d734aa%40%3Ccommits.druid.apache.org%3E)  (lists.apache.org) mailing-list
- [\[druid-commits\] 20210205 \[GitHub\] \[druid\] jihoonson merged pull request #10818: Fix CVE-2021-25646](https://lists.apache.org/thread.html/r7dff4790e7a5c697fc0360adf11f5aeb31cd6ad80644fffee690673c%40%3Ccommits.druid.apache.org%3E)  (lists.apache.org) mailing-list
- [\[druid-commits\] 20210205 \[GitHub\] \[druid\] jihoonson commented on pull request #10818: Fix CVE-2021-25646](https://lists.apache.org/thread.html/ra4225912f501016bc5e0ac44e14b8d6779173a3a1dc7baacaabcc9ba%40%3Ccommits.druid.apache.org%3E)  (lists.apache.org) mailing-list
- [\[druid-commits\] 20210205 \[GitHub\] \[druid\] jihoonson merged pull request #10854: \[Backport\] Fix CVE-2021-25646](https://lists.apache.org/thread.html/r5ef625076982aee7d23c23f07717e626b73f421fba5154d1e4de15e1%40%3Ccommits.druid.apache.org%3E)  (lists.apache.org) mailing-list
- [\[druid-dev\] 20210331 Regarding the 0.21.0 release](https://lists.apache.org/thread.html/r443e2916c612fbd119839c0fc0729327d6031913a75081adac5b43ad%40%3Cdev.druid.apache.org%3E)  (lists.apache.org) mailing-list
- [packetstormsecurity.com/files/162345/Apache-Druid-0.20.0-Re…](http://packetstormsecurity.com/files/162345/Apache-Druid-0.20.0-Remote-Command-Execution.html)

## Timeline

1. ID reserved Jan 21, 2021
2. Record published Jan 29, 2021
3. Record last updated Feb 13, 2025

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## About CubePath

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:04 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)