{"id":"CVE-2026-59887","sourceIdentifier":"security-advisories@github.com","published":"2026-07-08T17:17:26.883","lastModified":"2026-10-25T17:10:00.197","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"linkify-it is a links recognition library with full Unicode support. Prior to 5.0.2, the mailto: schema validator used by .test() and .match() can be invoked at every mailto: occurrence and scan the remaining input through src_email_name in lib/re.mjs, causing O(n^2) CPU consumption on crafted user text. This issue is fixed in version 5.0.2."},{"lang":"es","value":"linkify-it es una biblioteca de reconocimiento de enlaces con soporte completo de Unicode. Antes de la versión 5.0.2, el validador del esquema mailto: utilizado por .test() y .match() puede ser invocado en cada ocurrencia de mailto: y escanear la entrada restante a través de src_email_name en lib/re.mjs, causando un consumo de CPU de O(n^2) en texto de usuario manipulado. Este problema está solucionado en la versión 5.0.2."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"markdown-it","product":"linkify-it","versions":[{"version":"< 5.0.2","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-09T14:40:56.927532Z","id":"CVE-2026-59887","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-407"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:markdown-it:linkify-it:*:*:*:*:*:node.js:*:*","versionEndExcluding":"5.0.2","matchCriteriaId":"B4867AD7-D754-470B-BA7B-F6806D94C027"}]}]}],"references":[{"url":"https://github.com/markdown-it/linkify-it/commit/105e5d77f7d119871d2b2d86ed208568eb3e7ffe","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/markdown-it/linkify-it/releases/tag/5.0.2","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/markdown-it/linkify-it/security/advisories/GHSA-v245-v573-v5vm","source":"security-advisories@github.com","tags":["Exploit","Mitigation","Vendor Advisory"]},{"url":"https://github.com/markdown-it/linkify-it/security/advisories/GHSA-v245-v573-v5vm","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Mitigation","Vendor Advisory"]}]}