EPSS
Percentile
68.7%
Moodle is vulnerable to regular expression denial of service (ReDoS) attacks. Attackers can cause CPU consumption or partial outage by passing a string to the filter/mediaplugin/filter.php which has an improper regular expression.
filter/mediaplugin/filter.php
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-48546
openwall.com/lists/oss-security/2015/01/19/1
moodle.org/mod/forum/discuss.php?d=278617