lib/ajax/getnavbranch.php in Moodle through 2.6.11, 2.7.x before 2.7.13, 2.8.x before 2.8.11, 2.9.x before 2.9.5, and 3.0.x before 3.0.3, when the forcelogin feature is enabled, allows remote attackers to obtain sensitive category-detail information from the navigation branch by leveraging the guest role for an Ajax request.
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-52774
www.openwall.com/lists/oss-security/2016/03/21/1
github.com/moodle/moodle
github.com/moodle/moodle/commit/0766509ab02353008af62f953f7ebc0f6210411a
github.com/moodle/moodle/commit/3c069c16db62d0e0a64137578e92c22d604dd261
github.com/moodle/moodle/commit/7b9fbb1cf4228b39f81454cdb8370e7853fbe184
github.com/moodle/moodle/commit/dc8421575f35585a7a4fc1c9710dafd1d0483d4e
github.com/moodle/moodle/commit/ea8987644fdbbee291337263598b0c3c7bf27c36
moodle.org/mod/forum/discuss.php?d=330180
nvd.nist.gov/vuln/detail/CVE-2016-2158
web.archive.org/web/20160424224349/www.securitytracker.com/id/1035333