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redhat single sign-on 7.0 vulnerabilities and exploits
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3.3
CVSSv2
CVE-2021-3461
A flaw was found in keycloak where keycloak may fail to logout user session if the logout request comes from external SAML identity provider and Principal Type is set to Attribute [Name].
Redhat Keycloak 9.0.13
Redhat Single Sign-on 7.0
Redhat Single Sign-on 7.4
Redhat Single Sign-on 7.4.7
7.5
CVSSv3
CVE-2021-3632
A flaw was found in Keycloak. This vulnerability allows anyone to register a new security device or key when there is not a device already registered for any user by using the WebAuthn password-less login flow.
Redhat Keycloak
Redhat Single Sign-on 7.0
Redhat Single Sign-on
5.5
CVSSv2
CVE-2019-10201
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 ...
Redhat Keycloak
Redhat Single Sign-on 7.0
Redhat Single Sign-on 7.3.3
3.5
CVSSv2
CVE-2017-12158
It was found that Keycloak would accept a HOST header URL in the admin console and use it to determine web resource locations. An attacker could use this flaw against an authenticated user to attain reflected XSS via a malicious server.
Redhat Single Sign On 7.0
Redhat Single Sign On 7.1
Keycloak Keycloak -
5
CVSSv2
CVE-2020-10758
A vulnerability was found in Keycloak prior to 11.0.1 where DoS attack is possible by sending twenty requests simultaneously to the specified keycloak server, all with a Content-Length header value that exceeds the actual byte count of the request body.
Redhat Keycloak
Redhat Openshift Application Runtimes -
Redhat Openshift Application Runtimes 1.0
Redhat Single Sign-on -
Redhat Single Sign-on 7.0
Redhat Single Sign-on 7.4
3.8
CVSSv3
CVE-2022-2256
A Stored Cross-site scripting (XSS) vulnerability was found in keycloak as shipped in Red Hat Single Sign-On 7. This flaw allows a privileged malicious user to execute malicious scripts in the admin console, abusing the default roles functionality.
Redhat Single Sign-on 7.0
5.3
CVSSv3
CVE-2021-3754
A flaw was found in keycloak where an attacker is able to register himself with the username same as the email ID of any existing user. This may cause trouble in getting password recovery email in case the user forgets the password.
Redhat Keycloak -
Redhat Single Sign-on 7.0
1 Github repository
5
CVSSv2
CVE-2021-3637
A flaw was found in keycloak-model-infinispan in keycloak versions prior to 14.0.0 where authenticationSessions map in RootAuthenticationSessionEntity grows boundlessly which could lead to a DoS attack.
Redhat Keycloak
Redhat Single Sign-on 7.0
5.4
CVSSv3
CVE-2022-0225
A flaw was found in Keycloak. This flaw allows a privileged malicious user to use the malicious payload as the group name while creating a new group from the admin console, leading to a stored Cross-site scripting (XSS) attack.
Redhat Keycloak -
Redhat Single Sign-on 7.0
6.1
CVSSv3
CVE-2023-6927
A flaw was found in Keycloak. This issue may allow an malicious user to steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt" which could be used to bypass the security patch implemented to address CVE-2023-6134.
Redhat Keycloak -
Redhat Single Sign-on 7.0
Preferred Score:
CVSSv2
CVSSv2
CVSSv3
CVSSv4
EPSS
VMScore
Recommendations:
unprivileged
privilege escalation
CVE-2024-57040
morning
CVE-2025-24801
CVE-2025-24813
CVE-2025-29930
CVE-2024-10442
smartos
CVE-2025-0694
cryptolib
mbconnect24
local users
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