What’s Vulnerable › Vulnerabilities

CVE-2021-20323

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 37.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-03-25 · updated 2026-06-17
• Weakness: CWE-79

Description

A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak.

Affected products

• Keycloak: before 17.0.0 — fixed in 17.0.0

How to fix

Upgrade to a fixed version: Keycloak 17.0.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2013577
• https://bugzilla.redhat.com/show_bug.cgi?id=2013577

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