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Vulnerability record · CVE-2021-44791 · published 7 July 2022

CVE-2021-44791: Apache druid cross-site scripting vulnerability

Apache · Druid

In Apache Druid 0.22.1 and earlier, certain specially-crafted links result in unescaped URL parameters being sent back in HTML responses. This makes it possible to execute reflected XSS attacks.

6.1 CVSS 3.1 Medium EPSS 2.2% · top 18.0% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
2.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

In Apache Druid 0.22.1 and earlier, certain specially-crafted links result in unescaped URL parameters being sent back in HTML responses. This makes it possible to execute reflected XSS attacks.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://lists.apache.org/thread/lh2kcl4j45q7xj4w6rqf6kwf0mvyp2o6 Mailing ListVendor Advisory
https://lists.apache.org/thread/lh2kcl4j45q7xj4w6rqf6kwf0mvyp2o6 Mailing ListVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-44791), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.