CVE-2020-1727

5.4 mediumEPSS 0.8%

Medium (5.4) in redhat keycloak. EPSS 0.8% chance of exploitation in the next 30 days.

A vulnerability was found in Keycloak before 9.0.2, where every Authorization URL that points to an IDP server lacks proper input validation as it allows a wide range of characters. This flaw allows a malicious to craft deep links that introduce further attack scenarios on affected clients.

Severity

CVSS 3.1

5.4 medium

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

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2020-06-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

redhat:keycloak

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1727
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1727

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