{"id":"CVE-2026-2327","state":"PUBLISHED","title":"Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /\\*+$/ in the linkify f","description":"Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /\\*+$/ in the linkify function. An attacker can supply a long sequence of * characters followed by a non-matching character, which triggers excessive backtracking and may lead to a denial-of-service condition.","publishedAt":"2026-02-12T05:00:07.369Z","updatedAt":"2026-02-12T14:41:53.714Z","severity":{"score":6.9,"label":"Medium","version":"4.0","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:P","source":"snyk"},"assigner":"snyk","products":["n/a markdown-it"],"affected":[{"vendor":"n/a","product":"markdown-it","versions":[{"version":"13.0.0","status":"affected","lessThan":"14.1.1","versionType":"semver"}]}],"references":["https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750","https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917","https://github.com/markdown-it/markdown-it/blob/14.1.0/lib/rules_inline/linkify.mjs%23L33","https://github.com/markdown-it/markdown-it/commit/4b4bbcae5e0990a5b172378e507b33a59012ed26"],"weaknesses":["CWE-1333"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/2xxx/CVE-2026-2327.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-2327","state":"PUBLISHED","datePublished":"2026-02-12T05:00:07.369Z","dateUpdated":"2026-02-12T14:41:53.714Z","assignerShortName":"snyk","assignerOrgId":"bae035ff-b466-4ff4-94d0-fc9efd9e1730","dateReserved":"2026-02-11T07:02:27.771Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /\\*+$/ in the linkify function. An attacker can supply a long sequence of * characters followed by a non-matching character, which triggers excessive backtracking and may lead to a denial-of-service condition."}],"affected":[{"vendor":"n/a","product":"markdown-it","versions":[{"version":"13.0.0","status":"affected","lessThan":"14.1.1","versionType":"semver"}]}],"references":[{"url":"https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750"},{"url":"https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917"},{"url":"https://github.com/markdown-it/markdown-it/blob/14.1.0/lib/rules_inline/linkify.mjs%23L33"},{"url":"https://github.com/markdown-it/markdown-it/commit/4b4bbcae5e0990a5b172378e507b33a59012ed26"}],"metrics":[{"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","exploitCodeMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P"},"cvssV4_0":{"version":"4.0","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"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:P"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1333","description":"Regular Expression Denial of Service (ReDoS)","lang":"en"}]}],"providerMetadata":{"shortName":"snyk","orgId":"bae035ff-b466-4ff4-94d0-fc9efd9e1730","dateUpdated":"2026-02-12T05:00:07.369Z"},"credits":[{"value":"Duc Le Trung","lang":"en"}]},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750","tags":["exploit"]},{"url":"https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-12T14:41:31.205349Z","id":"CVE-2026-2327","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-02-12T14:41:53.714Z"}}]}}}