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CVE-2019-3877

2026-10-06T16:01:24.523045+00:00

Affected: uninett mod_auth_mellon

A vulnerability was found in mod_auth_mellon 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 apr_uri_parse function.

USN-3924-1 — libapache2-mod-auth-mellon vulnerabilities

2026-10-06T16:01:24.523137+00:00

Affected: Ubuntu:18.04:LTS: libapache2-mod-auth-mellon

It was discovered that mod_auth_mellon incorrectly handled certain requests. An attacker could possibly use this issue to redirect a user to a malicious URL. (CVE-2019-3877)

It was discovered that mod_auth_mellon incorrectly handled certain requests. An attacker could possibly use this issue to access sensitive information. (CVE-2019-3878)