{"id":15869,"date":"2026-09-04T19:04:34","date_gmt":"2026-09-04T11:04:34","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-49493"},"modified":"2026-09-04T19:04:34","modified_gmt":"2026-09-04T11:04:34","slug":"cve-2026-49493","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-49493","title":{"rendered":"CVE-2026-49493 [HIGH] &#8211; Markdown Preview Enhanced before 0.8.28 parses Bitfield fenced code blocks with interpretJ"},"content":{"rendered":"<p>Markdown Preview Enhanced before 0.8.28 parses Bitfield fenced code blocks with interpretJS(), which evaluates the block content as code via vm.runInNewContext(), allowing arbitrary code execution. A crafted markdown document containing a malicious bitfield code block executes attacker-controlled code on the server side when the document is rendered or exported. Fixed in 0.8.28 by parsing bitfield register definitions with JSON5.parse(), since they are purely data.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Markdown Preview Enhanced before 0.8.28 parses Bitfield fenced code blocks with interpretJS(), which evaluates the block content as code via vm.runInNewContext(), allowing arbitrary code execution. A <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-15869","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/15869","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15869"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15869"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15869"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}