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CVE-2022-4361

Keycloak vulnerable to cross-site scripting when validating URI-schemes on SAML and OIDC

10.0 CriticalPublic exploitFix available

Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the SAML or OIDC providers. The vulnerability can allow an attacker to execute malicious scripts by setting the AssertionConsumerServiceURL value or the redirect_uri.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.69%Up 0.6 points since Jul 8, 2023
90%50%10%1%

What each source reports

CVE List Score used 10.0

Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the SAML or OIDC providers. The vulnerability can allow an attacker to execute malicious scripts by setting the AssertionConsumerServiceURL value or the redirect_uri.

Record
CVE-2022-4361
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-81
Updated
2026-11-02
EUVDEUVD-2023-1671 10.0

Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the SAML or OIDC providers. The vulnerability can allow an attacker to execute malicious scripts by setting the AssertionConsumerServiceURL value or the redirect_uri.

Record
EUVD-2023-1671
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-3p62-6fjh-3p5h 10.0

Keycloak vulnerable to cross-site scripting when validating URI-schemes on SAML and OIDC

AssertionConsumerServiceURL is a Java implementation for SAML Service Providers (org.keycloak.protocol.saml). Affected versions of this package are vulnerable to Cross-site Scripting (XSS).

AssertionConsumerServiceURL allows XSS when sending a crafted SAML XML request.

Record
GHSA-3p62-6fjh-3p5h
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-79, CWE-81
Updated
2026-11-02
NVD 10.0

Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the SAML or OIDC providers. The vulnerability can allow an attacker to execute malicious scripts by setting the AssertionConsumerServiceURL value or the redirect_uri.

Record
CVE-2022-4361
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-81, CWE-79
Updated
2026-11-02
OSV 10.0

Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the SAML or OIDC providers. The vulnerability can allow an attacker to execute malicious scripts by setting the AssertionConsumerServiceURL value or the redirect_uri.

Record
CVE-2022-4361
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-81
Updated
2026-11-02
OSVGHSA-3p62-6fjh-3p5h 10.0

Keycloak vulnerable to cross-site scripting when validating URI-schemes on SAML and OIDC

AssertionConsumerServiceURL is a Java implementation for SAML Service Providers (org.keycloak.protocol.saml). Affected versions of this package are vulnerable to Cross-site Scripting (XSS).

AssertionConsumerServiceURL allows XSS when sending a crafted SAML XML request.

Record
GHSA-3p62-6fjh-3p5h
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-79, CWE-81
Updated
2026-11-02
OSVRHSA-2023:3883 8.1

Red Hat Security Advisory: Red Hat Single Sign-On 7.6.4 security update on RHEL 7

Record
RHSA-2023:3883
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSVRHSA-2023:3884 8.1

Red Hat Security Advisory: Red Hat Single Sign-On 7.6.4 security update on RHEL 8

Record
RHSA-2023:3884
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSVRHSA-2023:3885 8.1

Red Hat Security Advisory: Red Hat Single Sign-On 7.6.4 security update on RHEL 9

Record
RHSA-2023:3885
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
org.keycloak:keycloak-services
Maven
 before 21.1.2
21.1.2
org.keycloak:keycloak-services
Maven
 before 21.1.2, plus listed versions
1.0-alpha-11.0-alpha-1-120620131.0-alpha-21.0-alpha-31.0-alpha-4
Show 45 moreShow less
1.0-beta-11.0-beta-1-201505211.0-beta-1-201505231.0-beta-21.0-beta-31.0-beta-41.0-final1.0-rc-11.0-rc-21.0.1.Final1.0.2.Final1.0.3.Final1.0.4.Final1.0.5.Final1.1.0.Beta11.1.0.Beta21.1.0.Final1.1.1.Final1.2.0.Beta11.2.0.CR11.2.0.Final1.3.0.Final1.3.1.Final1.4.0.Final1.5.0-Final1.5.0.Final1.5.1.Final1.6.0.Final1.6.1.Final1.7.0.CR11.7.0.Final1.8.0.Alpha11.8.0.CR11.8.0.CR21.8.0.CR31.8.0.Final1.8.1.Final1.9.0.CR11.9.0.Final1.9.1.Final1.9.2.Final1.9.3.Final1.9.4.Final1.9.5.Final1.9.7.Final
21.1.2
rh-sso7-keycloak
Red Hat:red_hat_single_sign_on:7.6::el7
From an advisory covering 5 CVEs
 before 0:18.0.8-1.redhat_00001.1.el7sso
0:18.0.8-1.redhat_00001.1.el7sso
rh-sso7-keycloak-server
Red Hat:red_hat_single_sign_on:7.6::el7
From an advisory covering 5 CVEs
 before 0:18.0.8-1.redhat_00001.1.el7sso
0:18.0.8-1.redhat_00001.1.el7sso
rh-sso7-keycloak
Red Hat:red_hat_single_sign_on:7.6::el8
From an advisory covering 5 CVEs
 before 0:18.0.8-1.redhat_00001.1.el8sso
0:18.0.8-1.redhat_00001.1.el8sso
rh-sso7-keycloak-server
Red Hat:red_hat_single_sign_on:7.6::el8
From an advisory covering 5 CVEs
 before 0:18.0.8-1.redhat_00001.1.el8sso
0:18.0.8-1.redhat_00001.1.el8sso
rh-sso7-keycloak
Red Hat:red_hat_single_sign_on:7.6::el9
From an advisory covering 5 CVEs
 before 0:18.0.8-1.redhat_00001.1.el9sso
0:18.0.8-1.redhat_00001.1.el9sso
rh-sso7-keycloak-server
Red Hat:red_hat_single_sign_on:7.6::el9
From an advisory covering 5 CVEs
 before 0:18.0.8-1.redhat_00001.1.el9sso
0:18.0.8-1.redhat_00001.1.el9sso

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubshoucheng3/keycloak__keycloak_CVE-2022-4361_21-1-12025-08-16
PoC in GitHubfaccimatteo/CVE-2022-43612025-11-09

History

History
RecordedChangedSources
affected, exploits, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-4361 is a critical vulnerability (CVSS 10.0) in Keycloak, published June 30, 2023. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.69%, the 53rd percentile. Fixed in org.keycloak:keycloak-services 21.1.2.

References

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