What’s Vulnerable › Vulnerabilities

CVE-2020-10748

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-09-16 · updated 2026-06-17
• Weakness: CWE-79

Description

A flaw was found in Keycloak's data filter, in version 10.0.1, where it allowed the processing of data URLs in some circumstances. This flaw allows an attacker to conduct cross-site scripting or further attacks.

Affected products

• Keycloak: 10.0.1
• Red Hat Single Sign-On: before 7.4.1 — fixed in 7.4.1

How to fix

Upgrade to a fixed version: Red Hat Single Sign-On 7.4.1. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1836786
• https://bugzilla.redhat.com/show_bug.cgi?id=1836786

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