viewtopic.php in phpBB 2.0.12 and earlier allows remote attackers to obtain sensitive information via a highlight parameter containing invalid regular expression syntax, which reveals the path in a PHP error message.
AV:N/AC:L/Au:N/C:P/I:N/A:N
This vulnerability has a 4.32% probability of being exploited in the next 30 days, ranking higher than 91% of all scored CVEs.