In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, use of the ap_get_basic_auth_pw() by third-party modules outside of the authentication phase may lead to authentication requirements being bypassed.
https://www.tenable.com/security/tns-2019-09
https://www.nomachine.com/SU08O00185
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03908en_us
https://support.apple.com/HT208221
https://security.netapp.com/advisory/ntap-20180601-0002/
https://security.gentoo.org/glsa/201710-32
https://access.redhat.com/errata/RHSA-2017:3477
https://access.redhat.com/errata/RHSA-2017:3476
https://access.redhat.com/errata/RHSA-2017:3475
https://access.redhat.com/errata/RHSA-2017:3195
https://access.redhat.com/errata/RHSA-2017:3194
https://access.redhat.com/errata/RHSA-2017:3193
https://access.redhat.com/errata/RHSA-2017:2483
https://access.redhat.com/errata/RHSA-2017:2479
https://access.redhat.com/errata/RHSA-2017:2478
http://www.securitytracker.com/id/1038711
http://www.securityfocus.com/bid/99135
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html