AI Score
Confidence
High
EPSS
Percentile
57.5%
The imap_header function in the IMAP functionality for PHP before 4.3.0 allows remote attackers to cause a denial of service via an e-mail message with a large number of “To” addresses, which triggers an error in the rfc822_write_address function.
bugs.php.net/bug.php?id=19280
bugzilla.redhat.com/bugzilla/show_bug.cgi?id=175040