{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-118772","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-28T19:20:05.018Z","datePublished":"2026-10-29T18:13:33.771Z","dateUpdated":"2026-10-29T18:13:33.771Z"},"containers":{"cna":{"title":"joi: quadratic-time split in `string().email({ multiple: true })` allows denial of service","problemTypes":[{"descriptions":[{"cweId":"CWE-1333","lang":"en","description":"CWE-1333: Inefficient Regular Expression Complexity","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/hapijs/joi/security/advisories/GHSA-4528-x5fx-h6hg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/hapijs/joi/security/advisories/GHSA-4528-x5fx-h6hg"},{"name":"https://github.com/hapijs/joi/pull/3162","tags":["x_refsource_MISC"],"url":"https://github.com/hapijs/joi/pull/3162"},{"name":"https://github.com/hapijs/joi/pull/3163","tags":["x_refsource_MISC"],"url":"https://github.com/hapijs/joi/pull/3163"},{"name":"https://github.com/hapijs/joi/commit/03dc1d909818503b06240dadc81e9227ed2649cf","tags":["x_refsource_MISC"],"url":"https://github.com/hapijs/joi/commit/03dc1d909818503b06240dadc81e9227ed2649cf"},{"name":"https://github.com/hapijs/joi/commit/807858d7480f5075b0610817e3e44230890fb18e","tags":["x_refsource_MISC"],"url":"https://github.com/hapijs/joi/commit/807858d7480f5075b0610817e3e44230890fb18e"},{"name":"https://github.com/hapijs/joi/releases/tag/v17.13.9","tags":["x_refsource_MISC"],"url":"https://github.com/hapijs/joi/releases/tag/v17.13.9"},{"name":"https://github.com/hapijs/joi/releases/tag/v18.3.1","tags":["x_refsource_MISC"],"url":"https://github.com/hapijs/joi/releases/tag/v18.3.1"}],"affected":[{"vendor":"hapijs","product":"joi","versions":[{"version":">= 16.0.0, <= 17.1.1","status":"affected"},{"version":">= 18.0.0, < 18.3.1","status":"affected"}]},{"vendor":"@hapi","product":"joi","versions":[{"version":">= 16.0.0, <= 17.1.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-29T18:13:33.771Z"},"descriptions":[{"lang":"en","value":"joi is a schema description language and data validator for JavaScript. From 17.1.1 until 17.13.9 and 18.3.1, the Joi.string().email({ multiple: true }) rule uses a separator regular expression whose leading whitespace quantifier is retried at every position in a long whitespace run that contains no separator, causing quadratic work during String.prototype.split. The behavior applies to the default separator and every custom separator. Applications that validate attacker-controlled values with the multiple option and no effective prior length limit can have the Node.js event loop blocked for seconds by one request, preventing other work. A .max() rule is not sufficient when abortEarly: false allows the email rule to run after the maximum-length check fails. This vulnerability is fixed in versions 17.13.9 and 18.3.1."}],"source":{"advisory":"GHSA-4528-x5fx-h6hg","discovery":"UNKNOWN"}}}}