GHSA-mrx9-2rrp-rhpxHigh· 7.5▾ TwilightDuplicate Advisory: joi: Quadratic regular-expression backtracking in `Joi.string().isoDate()`
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via GHSA
Last analysed / modified upstream
This advisory has been withdrawn because it is a duplicate of GHSA-6h2x-m376-mqjq. This link is maintained to preserve external references.
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.
joi >= 18.0.0, < 18.2.6Refer to the advisory for the patched release.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-92599High· 7.5joi (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
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-2026-84368Low· 3.7joi is a schema description language and data validator for JavaScript
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