{"id":"GHSA-mrx9-2rrp-rhpx","title":"Duplicate Advisory: joi: Quadratic regular-expression backtracking in `Joi.string().isoDate()`","summary":"Duplicate Advisory: joi: Quadratic regular-expression backtracking in `Joi.string().isoDate()`","severity":"high","cvss":7.5,"cwe":["CWE-1333"],"vendor":"joi","product":"joi","ecosystem":"npm","affected":["joi >= 18.0.0, < 18.2.6"],"published":"2026-09-17","updated":"2026-10-05","sourceUpdated":"2026-10-05T23:30:50Z","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-mrx9-2rrp-rhpx","references":[{"url":"https://github.com/hapijs/joi/security/advisories/GHSA-6h2x-m376-mqjq"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92599"},{"url":"https://www.vulncheck.com/advisories/joi-before-17.13.7-and-18.2.6-redos-via-isodate"},{"url":"https://github.com/advisories/GHSA-mrx9-2rrp-rhpx"}],"tags":["ghsa","npm"],"ingestedAt":"2026-10-05T23:36:21.163Z","slug":"GHSA-mrx9-2rrp-rhpx","body":"## Overview\n\n## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-6h2x-m376-mqjq. This link is maintained to preserve external references.\n\n## Original Description\njoi (npm package `joi`, hapi.js) versions >=17.2.0 <17.13.7 and >=18.0.0 <18.2.6 are vulnerable to regular expression denial of service in the `Joi.string().isoDate()` validation rule. One of the regular expressions the rule applies to the input is unanchored, so a valid ISO date followed by a long run of fractional-second digits causes the regex engine to restart its search from every position in the string, yielding time proportional to the square of the input length (about 1.4 s for 64 KB of digits and about 22 s for 256 KB). A remote attacker who can supply a string to an isoDate validation can stall the application with a single request. Fixed in 17.13.7 and 18.2.6; as a workaround, cap the length of the string before it reaches joi.\n\n## Affected packages\n\n- `joi >= 18.0.0, < 18.2.6`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}