SAML authentication broken after upgrade
After upgrade from version 2022.10.4 (build 117134) to 2023.11.3 (build 147512) logging via SAML SSO with strict mode enabled stopped working. It's not working even for already created accounts.
I'm getting SAML request is not authenticated due to errors: invalid_response
In Teamcity logs I'm not getting anything more - only that there's invalid reponse.
Before upgrade SSO logging with strict mode worked fine.
Teamcity is self-hosted on Linux machine. It's behind reverse proxy - to use strict mode I've added self-signed certificate directly to teamcity.
Do you know what could change between versions? I saw post similar to mine, but in my case it's Linux package, not Docker image. (SAML authentication broken after server upgrade – TeamCity Support | JetBrains)
Here's screenshot of my SAML settings, but as I mentioned - everything worked before upgrade - Screenshot ID: (2024_09_06_Kgrgzhzxs8b6UznoHBRGyW)
Best regards
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You are using a third-party plugin for SAML authentication (https://github.com/morincer/teamcity-plugin-saml), which is not maintained and supported by JetBrains.
I suggest looking through the troubleshooting section of the plugin documentation and contacting the plugin maintainer if you have further questions regarding the plugin's usage.
It may also be worth trying to update the plugin if you're not using the latest version.
Best regards,
Anton