{"id":"CVE-2018-18651","details":"An issue was discovered in Xpdf 4.00. catalog-\u003egetNumPages() in AcroForm.cc allows attackers to launch a denial of service (hang caused by large loop) via a specific pdf file, as demonstrated by pdftohtml. This is mainly caused by a large number after the /Count field in the file.","modified":"2026-03-14T09:28:35.405589Z","published":"2018-10-25T13:29:00.347Z","references":[{"type":"ADVISORY","url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/152005"},{"type":"EVIDENCE","url":"https://forum.xpdfreader.com/viewtopic.php?f=3&t=41219&p=41747#p41747"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-18651.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"4.00"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}