CVE-2026-92599

Summary

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.

Affected Software

Weaknesses

• CWE-1333: Inefficient Regular Expression Complexity

References

• https://github.com/hapijs/joi/security/advisories/GHSA-6h2x-m376-mqjq
• https://www.vulncheck.com/advisories/joi-before-17.13.7-and-18.2.6-redos-via-isodate

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