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A vulnerability was found in modauthmellon before v0.14.2. If Apache is configured as a reverse proxy and modauthmellon is configured to only let through authenticated users (with the require valid-user directive), adding special HTTP headers that are normally used to start the special SAML ECP (non-browser based) can be used to bypass authentication.
A vulnerability was found in modauthmellon before v0.14.2. An open redirect in the logout URL allows requests with backslashes to pass through by assuming that it is a relative URL, while the browsers silently convert backslash characters into forward slashes treating them as an absolute URL. This mismatch allows an attacker to bypass the redirect URL validation logic in apruriparse function.
Last updated 18 August 2025