What’s Vulnerable › Vulnerabilities

CVE-2019-10201

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-08-14 · updated 2026-06-17
• Weakness: CWE-592

Description

It was found that Keycloak's SAML broker, versions up to 6.0.1, did not verify missing message signatures. If an attacker modifies the SAML Response and removes the <Signature> sections, the message is still accepted, and the message can be modified. An attacker could use this flaw to impersonate other users and gain access to sensitive information.

Affected products

• Keycloak: through 6.0.1
• Red Hat Single Sign-On: 7.0, 7.3.3

References

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10201
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10201

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