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Vulnerability record · CVE-2020-1714 · published 13 May 2020

CVE-2020-1714: Redhat keycloak improper input validation vulnerability

Redhat · Keycloak

A flaw was found in Keycloak before version 11.0.0, where the code base contains usages of ObjectInputStream without type checks. This flaw allows an attacker to inject arbitrarily serialized Java Objects, which would then get deserialized in a privileged context and potentially lead to remote code execution.

8.8 CVSS 3.1 High EPSS 2.6% · top 15.2% CWE-20 · Improper input validation
8.8CVSS 3.1 base score, v2 6.5
2.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

A flaw was found in Keycloak before version 11.0.0, where the code base contains usages of ObjectInputStream without type checks. This flaw allows an attacker to inject arbitrarily serialized Java Objects, which would then get deserialized in a privileged context and potentially lead to remote code execution.

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

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1714 Issue TrackingVendor Advisory
https://github.com/keycloak/keycloak/pull/7053 PatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1714 Issue TrackingVendor Advisory
https://github.com/keycloak/keycloak/pull/7053 PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-1714), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.