What’s Vulnerable › Vulnerabilities

CVE-2020-14302

• Severity: medium (CVSS 4.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-12-15 · updated 2026-06-17
• Weakness: CWE-294

Description

A flaw was found in Keycloak before 13.0.0 where an external identity provider, after successful authentication, redirects to a Keycloak endpoint that accepts multiple invocations with the use of the same "state" parameter. This flaw allows a malicious user to perform replay attacks.

Affected products

• Keycloak: before 13.0.0 — fixed in 13.0.0

How to fix

Upgrade to a fixed version: Keycloak 13.0.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1849584
• https://bugzilla.redhat.com/show_bug.cgi?id=1849584

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