What’s Vulnerable › Vulnerabilities

CVE-2021-44791: Reflected XSS on certain HTTP endpoints

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-07-07 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• Apache Software Foundation Apache Druid: through 0.22.1

References

• https://lists.apache.org/thread/lh2kcl4j45q7xj4w6rqf6kwf0mvyp2o6
• https://lists.apache.org/thread/lh2kcl4j45q7xj4w6rqf6kwf0mvyp2o6

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