{"id":"DEBIAN-CVE-2011-4957","details":"The make_clickable function in wp-includes/formatting.php in WordPress before 3.1.1 does not properly check URLs before passing them to the PCRE library, which allows remote attackers to cause a denial of service (crash) via a comment with a crafted URL that triggers many recursive calls.","modified":"2026-09-14T06:47:28.146680691Z","published":"2012-06-27T21:55:02.360Z","upstream":["CVE-2011-4957"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2011-4957"}],"affected":[{"package":{"name":"wordpress","ecosystem":"Debian:12","purl":"pkg:deb/debian/wordpress?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.1+dfsg-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2011-4957.json"}},{"package":{"name":"wordpress","ecosystem":"Debian:13","purl":"pkg:deb/debian/wordpress?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.1+dfsg-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2011-4957.json"}},{"package":{"name":"wordpress","ecosystem":"Debian:14","purl":"pkg:deb/debian/wordpress?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.1+dfsg-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2011-4957.json"}}],"schema_version":"1.9.0"}