Medium severity · published Jul 7, 2022
CVE-2021-44791
In Apache Druid 0.22.1 and earlier, certain specially-crafted links result in unescaped URL parameters being sent back in HTML responses
6.1
CVSS
2.2%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)2.2% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DR
Druid · Apache
through 0.22.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-44791
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-44791
Mailing List
https://lists.apache.org/thread/lh2kcl4j45q7xj4w6rqf6kwf0mvyp2o6
More from Druid
9.8
CVE-2026-23906
Apache Druid: Authentication Bypass via LDAP Anonymous Bind
9.8
CVE-2025-59390
Apache Druid: Kerberos authenticaton chooses a cryptographically unsecure secret if not configured explicitly.
8.8
CVE-2021-26919
Apache Druid allows users to read data from other database systems using JDBC
8.8
CVE-2021-25646
Apache Druid includes the ability to execute user-provided JavaScript code embedded in various types of requests
6.5
CVE-2024-45537
Apache Druid allows users with certain permissions to read data from other database systems using JDBC