{"id":"CVE-2018-25110","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-25110","generatedAt":"2026-10-29T00:35:12.459Z","title":"Marked prior to version 0.3.17 is vulnerable to a Regular Expression Denial of Service (ReDoS) attack due to catastrophic backtracking in several regular expressions used for parsing HTML tags and markdown links.","description":"Marked prior to version 0.3.17 is vulnerable to a Regular Expression Denial of Service (ReDoS) attack due to catastrophic backtracking in several regular expressions used for parsing HTML tags and markdown links. An attacker can exploit this vulnerability by providing specially crafted markdown input, such as deeply nested or repetitively structured brackets or tag attributes, which cause the parser to hang and lead to a Denial of Service.","published":"2025-05-23T15:15:20.000Z","lastModified":"2026-06-17T01:54:44.000Z","status":"Analyzed","sourceIdentifier":"596c5446-0ce5-4ba2-aa66-48b3b757a647","cvss":{"version":"4.0","score":6.9,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-1333"],"affected":["marked project/marked"],"epss":{"score":0.0061,"percentile":0.48996,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.61%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/Checkmarx/Vulnerabilities-Proofs-of-Concept/tree/main/2018/CVE-2018-25110","tags":["Exploit","Third Party Advisory"],"source":"596c5446-0ce5-4ba2-aa66-48b3b757a647"},{"url":"https://github.com/markedjs/marked/commit/20bfc106013ed45713a21672ad4a34df94dcd485","tags":["Patch"],"source":"596c5446-0ce5-4ba2-aa66-48b3b757a647"},{"url":"https://github.com/markedjs/marked/issues/1070","tags":["Issue Tracking","Third Party Advisory"],"source":"596c5446-0ce5-4ba2-aa66-48b3b757a647"},{"url":"https://github.com/markedjs/marked/pull/1083","tags":["Issue Tracking","Patch"],"source":"596c5446-0ce5-4ba2-aa66-48b3b757a647"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-25110","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}