SAML login problem between 7.2.3 and 7.2.4

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Yan Zhou

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Sep 18, 2025, 6:46:05 PMSep 18
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Hello,

I have CAS 7.2.X war overlay, SAML authN seems broken in 7.2.4, it works in 7.2.3. I have a simple Spring Boot client that uses SAML to authenticate against CAS as server.

With 7.2.4, i am getting Unauthorized App Error when Client app sends SAML AuthN Request to CAS and redirect to CAS URL.  this works in 7.2.3.

I am listing CAS logs for the two different versions. I debugged through the code, it does not seem obvious what maybe the problem in CAS code.

Thanks, 
Yan

here is the log for 7.2.4, failed due to unauthorized error.

>
2025-09-17 12:05:22,847 DEBUG [tomcat-handler-7] [org.apereo.cas.support.saml.SamlUtils] - <********************************************************************************>
2025-09-17 12:05:22,854 INFO [tomcat-handler-7] [PROTOCOL_MESSAGE] - <
============================================================
SAML org.opensaml.saml.saml2.core.impl.AuthnRequestImpl
============================================================
<?xml version="1.0" encoding="UTF-8"?><saml2p:AuthnRequest xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol" AssertionConsumerServiceURL="https://localhost:8543/saml/SSO" Destination="https://localhost:8743/cas/idp/profile/SAML2/POST/SSO" ForceAuthn="false" ID="aehj5f5dbbg5i6i12df49c4gi38a84" IsPassive="false" IssueInstant="2025-09-17T16:05:20.416Z" ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Version="2.0">
    <saml2:Issuer xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion">https://localhost:8543/saml/metadata</saml2:Issuer>
    <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
..........
            </ds:X509Data>
        </ds:KeyInfo>
    </ds:Signature>
    <saml2p:NameIDPolicy Format="urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified"/>
</saml2p:AuthnRequest>

============================================================>
2025-09-17 12:05:22,929 DEBUG [tomcat-handler-7] [org.apereo.cas.support.saml.web.idp.profile.AbstractSamlIdPProfileHandlerController] - <Created service url [https://localhost:8743/cas/idp/profile/SAML2/Callback?srid=aehj5f5dbbg5i6i12df49c4gi38a84&entityId=https%3A%2F%2Flocalhost...]>
2025-09-17 12:05:22,931 DEBUG [tomcat-handler-7] [org.apereo.cas.support.saml.web.idp.profile.AbstractSamlIdPProfileHandlerController] - <Redirecting SAML authentication request to [https://localhost:8743/cas/login?service=https%3A%2F%2Flocalhost%3A8743%2Fcas%2Fidp%2Fprofile%2FSAML2%2FCallback%3Fsrid%3Daehj5f5dbbg5i6i12df49c4gi38a84%26entityId%3Dhttps%253A%252F%252Flocalhost%253A8543%252Fsaml%252Fmetadata]>
2025-09-17 12:05:22,931 DEBUG [tomcat-handler-7] [org.apereo.cas.support.saml.web.idp.profile.AbstractSamlIdPProfileHandlerController] - <Redirecting SAML authN request to [https://localhost:8743/cas/login?service=https%3A%2F%2Flocalhost%3A8743%2Fcas%2Fidp%2Fprofile%2FSAML2%2FCallback%3Fsrid%3Daehj5f5dbbg5i6i12df49c4gi38a84%26entityId%3Dhttps%253A%252F%252Flocalhost%253A8543%252Fsaml%252Fmetadata]>
2025-09-17 12:05:23,019 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.CasFlowHandlerMapping] - <Mapped to [FlowHandlerMapping.DefaultFlowHandler@49ffbe04]>
2025-09-17 12:05:23,026 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.CasFlowHandlerAdapter] - <Configuring CAS webflow execution plan...>
2025-09-17 12:05:23,103 INFO [scheduling-9] [org.apereo.cas.services.mgmt.AbstractServicesManager] - <Loaded [3] service(s) from cache [JsonServiceRegistry].>
2025-09-17 12:05:23,114 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.configurer.AbstractCasMultifactorWebflowConfigurer] - <Unable to locate state definition [delegatedAuthentication] in flow [mfa-simple]>
2025-09-17 12:05:23,115 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.configurer.AbstractCasWebflowConfigurer] - <[OidcWebflowConfigurer] could not find flow definition [account]. Available flow definition ids are [[clientredirect, login, logout, mfa-simple]]>
2025-09-17 12:05:23,330 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.login.InitialFlowSetupAction] - <Setting path for cookies for warn cookie generator to: [/cas/]>
2025-09-17 12:05:23,330 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.login.InitialFlowSetupAction] - <Setting path for cookies for TGC cookie generator to: [/cas/]>
2025-09-17 12:05:23,333 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.login.InitialFlowSetupAction] - <Placing service in context scope: [https://localhost:8743/cas/idp/profile/SAML2/Callback?srid=aehj5f5dbbg5i6i12df49c4gi38a84&entityId=https%3A%2F%2Flocalhost%3A8543%2Fsaml%2Fmetadata]>
2025-09-17 12:05:23,342 WARN [tomcat-handler-10] [org.apereo.cas.services.RegisteredServiceAccessStrategyUtils] - <Unauthorized Service Access. Service [https://localhost:8743/cas/idp/profile/SAML2/Callback?srid=aehj5f5dbbg5i6i12df49c4gi38a84&entityId=https%3A%2F%2Flocalhost%3A8543%2Fsaml%2Fmetadata] is not registered in the service registry. Review the service access strategy to evaluate policies required for service access>

here is the log for 7.2.3, working fine. 

2025-09-17 12:09:31,992 DEBUG [tomcat-handler-9] [org.apereo.cas.support.saml.SamlUtils] - <Logging [org.opensaml.saml.saml2.core.impl.AuthnRequestImpl]

[<?xml version="1.0" encoding="UTF-8"?><saml2p:AuthnRequest xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol" AssertionConsumerServiceURL="https://localhost:8543/saml/SSO" Destination="https://localhost:8743/cas/idp/profile/SAML2/POST/SSO" ForceAuthn="false" ID="a5af4e8dia2h4216478632h1b086c6" IsPassive="false" IssueInstant="2025-09-17T16:09:27.741Z" ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Version="2.0">
    <saml2:Issuer xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion">https://localhost:8543/saml/metadata</saml2:Issuer>
.............
    </ds:Signature>
    <saml2p:NameIDPolicy Format="urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified"/>
</saml2p:AuthnRequest>
]

>
2025-09-17 12:09:31,992 DEBUG [tomcat-handler-9] [org.apereo.cas.support.saml.SamlUtils] - <********************************************************************************>
2025-09-17 12:09:32,001 INFO [tomcat-handler-9] [PROTOCOL_MESSAGE] - <
============================================================
SAML org.opensaml.saml.saml2.core.impl.AuthnRequestImpl
============================================================
<?xml version="1.0" encoding="UTF-8"?><saml2p:AuthnRequest xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol" AssertionConsumerServiceURL="https://localhost:8543/saml/SSO" Destination="https://localhost:8743/cas/idp/profile/SAML2/POST/SSO" ForceAuthn="false" ID="a5af4e8dia2h4216478632h1b086c6" IsPassive="false" IssueInstant="2025-09-17T16:09:27.741Z" ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Version="2.0">
    <saml2:Issuer xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion">https://localhost:8543/saml/metadata</saml2:Issuer>
   ..........................
   
    <saml2p:NameIDPolicy Format="urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified"/>
</saml2p:AuthnRequest>

============================================================>
2025-09-17 12:09:32,070 DEBUG [tomcat-handler-9] [org.apereo.cas.support.saml.web.idp.profile.AbstractSamlIdPProfileHandlerController] - <Created service url [https://localhost:8743/cas/idp/profile/SAML2/Callback?srid=a5af4e8dia2h4216478632h1b086c6&entityId=https%3A%2F%2Flocalhost...]>
2025-09-17 12:09:32,072 DEBUG [tomcat-handler-9] [org.apereo.cas.support.saml.web.idp.profile.AbstractSamlIdPProfileHandlerController] - <Redirecting SAML authentication request to [https://localhost:8743/cas/login?service=https%3A%2F%2Flocalhost%3A8743%2Fcas%2Fidp%2Fprofile%2FSAML2%2FCallback%3Fsrid%3Da5af4e8dia2h4216478632h1b086c6%26entityId%3Dhttps%253A%252F%252Flocalhost%253A8543%252Fsaml%252Fmetadata]>
2025-09-17 12:09:32,072 DEBUG [tomcat-handler-9] [org.apereo.cas.support.saml.web.idp.profile.AbstractSamlIdPProfileHandlerController] - <Redirecting SAML authN request to [https://localhost:8743/cas/login?service=https%3A%2F%2Flocalhost%3A8743%2Fcas%2Fidp%2Fprofile%2FSAML2%2FCallback%3Fsrid%3Da5af4e8dia2h4216478632h1b086c6%26entityId%3Dhttps%253A%252F%252Flocalhost%253A8543%252Fsaml%252Fmetadata]>
2025-09-17 12:09:32,158 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.CasFlowHandlerMapping] - <Mapped to [FlowHandlerMapping.DefaultFlowHandler@4830d7e2]>
2025-09-17 12:09:32,163 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.SamlRegisteredServiceMetadataAdaptor] - <Locating metadata for entityID [https://localhost:8543/saml/metadata] by attempting to run through the metadata chain...>
2025-09-17 12:09:32,165 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.cache.SamlRegisteredServiceDefaultCachingMetadataResolver] - <Resolving metadata for [samlsp] at [file:///D:/installedApps/tools/casconfig/sp-metadata/springsp_saml_metadata.xml]>
2025-09-17 12:09:32,165 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.cache.SamlRegisteredServiceDefaultCachingMetadataResolver] - <Locating cached metadata resolver using key [f9e5132b7e2b93144b67bb2a6fecf673b0f63d32a8fdf68b6677a3d1bc4e4e671e8dc67697d9e495825f94d1b078b229619cf145d485a241a91ef28cbfdb31d7] for service [samlsp]. Attempt [0]>
2025-09-17 12:09:32,166 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.SamlRegisteredServiceMetadataAdaptor] - <Resolved metadata chain from [file:///D:/installedApps/tools/casconfig/sp-metadata/springsp_saml_metadata.xml] using [org.opensaml.saml.metadata.resolver.ChainingMetadataResolver]. Filtering the chain by entity ID [https://localhost:8543/saml/metadata]>
2025-09-17 12:09:32,166 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.SamlRegisteredServiceMetadataAdaptor] - <Located SP SSODescriptor in metadata for [https://localhost:8543/saml/metadata]. Metadata is valid until [forever]>
2025-09-17 12:09:32,169 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.CasFlowHandlerAdapter] - <Configuring CAS webflow execution plan...>
2025-09-17 12:09:32,245 INFO [scheduling-9] [org.apereo.cas.services.mgmt.AbstractServicesManager] - <Loaded [3] service(s) from cache [JsonServiceRegistry].>
2025-09-17 12:09:32,255 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.configurer.AbstractCasMultifactorWebflowConfigurer] - <Unable to locate state definition [delegatedAuthentication] in flow [mfa-simple]>
2025-09-17 12:09:32,256 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.configurer.AbstractCasWebflowConfigurer] - <[OidcWebflowConfigurer] could not find flow definition [account]. Available flow definition ids are [[clientredirect, login, logout, mfa-simple]]>
2025-09-17 12:09:32,454 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.login.InitialFlowSetupAction] - <Setting path for cookies for warn cookie generator to: [/cas/]>
2025-09-17 12:09:32,454 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.login.InitialFlowSetupAction] - <Setting path for cookies for TGC cookie generator to: [/cas/]>
2025-09-17 12:09:32,457 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.login.InitialFlowSetupAction] - <Placing service in context scope: [https://localhost:8743/cas/idp/profile/SAML2/Callback?srid=a5af4e8dia2h4216478632h1b086c6&entityId=https%3A%2F%2Flocalhost%3A8543%2Fsaml%2Fmetadata]>
2025-09-17 12:09:32,459 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.SamlRegisteredServiceMetadataAdaptor] - <Locating metadata for entityID [https://localhost:8543/saml/metadata] by attempting to run through the metadata chain...>
2025-09-17 12:09:32,461 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.cache.SamlRegisteredServiceDefaultCachingMetadataResolver] - <Resolving metadata for [samlsp] at [file:///D:/installedApps/tools/casconfig/sp-metadata/springsp_saml_metadata.xml]>
2025-09-17 12:09:32,461 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.cache.SamlRegisteredServiceDefaultCachingMetadataResolver] - <Locating cached metadata resolver using key [f9e5132b7e2b93144b67bb2a6fecf673b0f63d32a8fdf68b6677a3d1bc4e4e671e8dc67697d9e495825f94d1b078b229619cf145d485a241a91ef28cbfdb31d7] for service [samlsp]. Attempt [0]>
2025-09-17 12:09:32,462 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.SamlRegisteredServiceMetadataAdaptor] - <Resolved metadata chain from [file:///D:/installedApps/tools/casconfig/sp-metadata/springsp_saml_metadata.xml] using [org.opensaml.saml.metadata.resolver.ChainingMetadataResolver]. Filtering the chain by entity ID [https://localhost:8543/saml/metadata]>
2025-09-17 12:09:32,462 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.SamlRegisteredServiceMetadataAdaptor] - <Located SP SSODescriptor in metadata for [https://localhost:8543/saml/metadata]. Metadata is valid until [forever]>
2025-09-17 12:09:32,465 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.SamlRegisteredServiceMetadataAdaptor] - <Locating metadata for entityID [https://localhost:8543/saml/metadata] by attempting to run through the metadata chain...>
2025-09-17 12:09:32,467 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.cache.SamlRegisteredServiceDefaultCachingMetadataResolver] - <Resolving metadata for [samlsp] at [file:///D:/installedApps/tools/casconfig/sp-metadata/springsp_saml_metadata.xml]>
2025-09-17 12:09:32,468 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.cache.SamlRegisteredServiceDefaultCachingMetadataResolver] - <Locating cached metadata resolver using key [f9e5132b7e2b93144b67bb2a6fecf673b0f63d32a8fdf68b6677a3d1bc4e4e671e8dc67697d9e495825f94d1b078b229619cf145d485a241a91ef28cbfdb31d7] for service [samlsp]. Attempt [0]>
2025-09-17 12:09:32,468 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.SamlRegisteredServiceMetadataAdaptor] - <Resolved metadata chain from [file:///D:/installedApps/tools/casconfig/sp-metadata/springsp_saml_metadata.xml] using [org.opensaml.saml.metadata.resolver.ChainingMetadataResolver]. Filtering the chain by entity ID [https://localhost:8543/saml/metadata]>
2025-09-17 12:09:32,468 DEBUG [tomcat-handler-10] [org.apereo.cas.support.saml.services.idp.metadata.SamlRegisteredServiceMetadataAdaptor] - <Located SP SSODescriptor in metadata for [https://localhost:8543/saml/metadata]. Metadata is valid until [forever]>
2025-09-17 12:09:32,468 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.login.InitialFlowSetupAction] - <Placing registered service [https://localhost:8543/saml/metadata] with id [1003] in context scope>
2025-09-17 12:09:32,475 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.authentication.RegisteredServiceAuthenticationPolicySingleSignOnParticipationStrategy] - <Evaluating authentication policy [DefaultRegisteredServiceAuthenticationPolicy(requiredAuthenticationHandlers=[], excludedAuthenticationHandlers=[], criteria=null)] for [samlsp]>
2025-09-17 12:09:32,870 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.actions.DelegatedClientAuthenticationAction] - <Setting path for cookies for distributed session cookie generator to: [/cas/]>
2025-09-17 12:09:32,890 DEBUG [tomcat-handler-10] [org.apereo.cas.web.flow.resolver.impl.AbstractCasWebflowEventResolver] - <Resolved single event [success] via [org.apereo.cas.web.flow.resolver.impl.RankedMultifactorAuthenticationProviderWebflowEventResolver] for this context>
2025-09-17 12:09:32,895 INFO [tomcat-handler-10] [org.apereo.inspektr.audit.AuditTrailManager] - <Audit trail record BEGIN
=============================================================
WHEN: 2025-09-17T16:09:32.894204900

Agus Santosa

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Sep 24, 2025, 4:00:07 PM (9 days ago) Sep 24
to CAS Community, Yan Zhou
This looks similar to what I encountered earlier and it affects "localhost" only.
See another thread: SAML2 service 7.1.x and 7.2.x
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