mod_auth_openidc is an OpenID Certified™ authentication and authorization module for the Apache 2.x HTTP server. Versions prior to 2.4.12.2 are vulnerable to Open Redirect. When providing a logout parameter to the redirect URI, the existing code in oidc_validate_redirect_url() does not properly check for URLs that start with /\t, leading to an open redirect. This issue has been patched in version 2.4.12.2. Users unable to upgrade can mitigate the issue by configuring mod_auth_openidc to only allow redirection when the destination matches a given regular expression with OIDCRedirectURLsAllowed.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade cjose-develUpgrade mod_auth_openidcUpgrade cjose | Nov 16, 2023 | Dec 14, 2022 |
| Centos_linux | — | Upgrade cjose-develUpgrade cjose-debugsourceUpgrade cjoseUpgrade cjose-debuginfoUpgrade mod_auth_openidcUpgrade mod_auth_openidc-debuginfoUpgrade mod_auth_openidc-debugsource | Nov 8, 2023 | Dec 14, 2022 |
| Debian | — | Upgrade libapache2-mod-auth-openidc | Jul 24, 2023 | Dec 14, 2022 |
| Oracle_linux | — | Upgrade cjose-develUpgrade cjoseUpgrade mod_auth_openidc | Nov 22, 2023 | Dec 14, 2022 |
| Redhat_linux | — | Upgrade cjose-debuginfoUpgrade mod_auth_openidcUpgrade cjoseUpgrade mod_auth_openidc-debugsourceUpgrade cjose-develNo solution existsUpgrade mod_auth_openidc-debuginfoUpgrade cjose-debugsource | Nov 8, 2023 | Dec 14, 2022 |
| Suse | — | Upgrade apache2-mod_auth_openidc | Jan 31, 2023 | Dec 14, 2022 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Dec 14, 2022 |
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