CVE-2021-25646

HIGHNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because EPSS predicts 99% probability of exploitation within the next 30 days (top 0.1% of all CVEs). NVD baseline CVSS 8.8 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, nvd
Trending — 3 sources updated this weekWeaponized
8.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 99%
CISA-KEV: Not listedEPSS: 99%CVSS: 8.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.8
EG Score
9.0(high)
EG Risk
85(Track)
EG Risk 85/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation99% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
99.9%
KEV
Not listed

Published

January 29, 2021

Last Modified

November 21, 2024

References (32)

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.apache.druid:druid0.13.0-incubating ... 0.20.0 (14 versions)0.20.1—

Data Freshness Timeline

(refreshed 5× in last 7d / 9× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 01:58 UTCEG score recompute
  2. 2026-07-22 22:45 UTCEG score recompute
  3. 2026-07-21 15:22 UTCEPSS rescore
  4. 2026-07-21 15:22 UTCEPSS rescore
  5. 2026-07-19 02:52 UTCOSV refresh
  6. 2026-07-09 19:07 UTCEPSS rescore
  7. 2026-07-06 02:21 UTCEPSS rescore
  8. 2026-07-06 02:21 UTCEPSS rescore
  9. 2026-07-01 09:48 UTCOSV refresh
  10. 2026-06-17 17:51 UTCEPSS rescore
  11. 2026-06-15 17:46 UTCEPSS rescore
  12. 2026-06-13 15:13 UTCOSV refresh
  13. 2026-06-12 23:10 UTCEPSS rescore
  14. 2026-06-11 13:58 UTCEPSS rescore
  15. 2026-06-08 14:15 UTCEPSS rescore
  16. 2026-06-06 13:46 UTCEPSS rescore
  17. 2026-06-06 13:46 UTCEPSS rescore
  18. 2026-06-06 13:46 UTCEPSS rescore
  19. 2026-06-05 22:45 UTCEPSS rescore
  20. 2026-06-05 22:45 UTCEPSS rescore
  21. 2026-06-01 13:50 UTCEPSS rescore
  22. 2026-06-01 13:50 UTCEPSS rescore
  23. 2026-05-28 13:43 UTCEPSS rescore
  24. 2026-05-28 13:43 UTCEPSS rescore
  25. 2026-05-26 21:29 UTCEG score recompute

Publicly available exploits

(9 references)

Working exploit code is in the public domain (1 Metasploit module) (7 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCk7pro/CVE-2021-25646-exp
    First seen Oct 4, 2024

    CVE-2021-25646 Apache Druid 远程代码执行 漏洞检测和利用工具

    Open source ↗
  • GitHub PoCj2ekim/CVE-2021-25646
    First seen Dec 12, 2021

    Apache Druid remote code execution vulnerability - Apache Druid 远程代码执行漏洞利用 CVE-2021-25646

    Open source ↗
  • GitHub PoCgivemefivw/CVE-2021-25646
    First seen Apr 14, 2021

    CVE-2021-25646 Apache Druid 远程代码执行漏洞 Wker脚本

    Open source ↗
  • GitHub PoC1n7erface/PocList
    First seen Mar 11, 2021

    Alibaba-Nacos-Unauthorized/ApacheDruid-RCE_CVE-2021-25646/MS-Exchange-SSRF-CVE-2021-26885/Oracle-WebLogic-CVE-2021-2109_RCE/RG-CNVD-2021-14536/RJ-SSL-VPN-UltraVires/Redis-Unauthorized-RCE/TDOA-V11.7-GetOnlineCookie/VMware-vCenter-GetAnyFile/yongyou-GRP-U8-XXE/Oracle-WebLogic-CVE-2020-14883/Oracle-WebLogic-CVE-2020-14882/Apache-Solr-GetAnyFile/F5-BIG-IP-CVE-2021-22986/Sonicwall-SSL-VPN-RCE/GitLab-Graphql-CNVD-2021-14193/D-Link-DCS-CVE-2020-25078/WLAN-AP-WEA453e-RCE/360TianQing-Unauthorized/360TianQing-SQLinjection/FanWeiOA-V8-SQLinjection/QiZhiBaoLeiJi-AnyUserLogin/QiAnXin-WangKangFirewall-RCE/金山-V8-终端安全系统/NCCloud-SQLinjection/ShowDoc-RCE

    Open source ↗
  • GitHub PoCVulnmachines/Apache-Druid-CVE-2021-25646
    First seen Feb 13, 2021
    Open source ↗
  • GitHub PoClp008/CVE-2021-25646
    First seen Feb 3, 2021
    Open source ↗
  • GitHub PoCyaunsky/cve-2021-25646
    First seen Feb 3, 2021

    Apache Druid 远程代码执行;检测脚本

    Open source ↗
  • Metasploitexploit/linux/http/apache_druid_js_rce✓ verified
    First seen Jan 21, 2021

    Apache Druid 0.20.0 Remote Command Execution

    Open source ↗
  • Nucleihttp/cves/2021/CVE-2021-25646.yaml
    First seen Jan 1, 2021

    Apache Druid - Remote Code Execution

    Open source ↗

Frequently asked(5)

What is CVE-2021-25646?
CVE-2021-25646 is a high vulnerability published on January 29, 2021. 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…
When was CVE-2021-25646 disclosed?
CVE-2021-25646 was first published in the National Vulnerability Database on January 29, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-25646 actively exploited?
CVE-2021-25646 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-25646?
CVE-2021-25646 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
How do I remediate CVE-2021-25646?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-25646, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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