CVE-2026-92599High· 7.5▾ Twilightjoi (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 t…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 18.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
0.3% → 0.6%
joi (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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
joi >= 17.2.0, < 17.13.7joi >= 18.0.0, < 18.2.6Patched in:
joi 17.13.7joi 18.2.6Connected by shared product, vendor, weakness, or advisory.
GHSA-mrx9-2rrp-rhpxHigh· 7.5Duplicate Advisory: joi: Quadratic regular-expression backtracking in `Joi.string().isoDate()`
GHSA-6h2x-m376-mqjqHigh· 7.5joi: Quadratic regular-expression backtracking in `Joi.string().isoDate()`
CVE-2026-90771Low· 3.7joi before versions 17.13.8 and 18.2.9 contains a prototype pollution vulnerability in the messages compilation function that accepts __proto__ as an error code
CVE-2026-84367Low· 3.7joi is a schema description language and data validator for JavaScript
CVE-2026-111766Low· 3.7markdown-it: Quadratic-time denial of service in inline HTML parsing with html enabled
CVE-2026-111997Medium· 5.3ip-address: Address6 matches a zone identifier in quadratic time ahead of its length limit, allowing a single long string to stall the process