CVE-2026-92599

Joi before 17.13.7 and 18.2.6 ReDoS via isoDate

High8.7EPSS 0.58%

Published: 16 Sept 2026
Updated: 18 Sept 2026
Reserved: 16 Sept 2026
Assigned by: VulnCheck

Description

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.

Scores

CVSS scores of CVE-2026-92599, by who scored it
Scored by	CVSS	Score	Vector
VulnCheckCNA (assigner)	4.0	High8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
VulnCheckCNA (assigner)	3.1	High7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Awaiting Analysis	4.0	High8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS (exploitation in 30 days): 0.58% · top 52% of all CVEs (6 Nov 2026)
CISA SSVC: Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.7.

Weakness

CWE-1333: Inefficient Regular Expression Complexity (opens in a new tab)All about CWE-1333 and its CVEs

Affected products

hapijs · joi
- affected 17.2.0 – < 17.13.7
- unaffected 17.13.7
hapijs · joi
- affected 18.0.0 – < 18.2.6
- unaffected 18.2.6

Affected packages

From reviewed advisories of the GitHub Advisory Database.

npmjoiGHSA-6h2x-m376-mqjq (opens in a new tab)

References (2)

GitHub Security Advisory (GHSA-6h2x-m376-mqjq) (opens in a new tab)vendor-advisory
VulnCheck Advisory: Joi before 17.13.7 and 18.2.6 ReDoS via isoDate (opens in a new tab)third-party-advisory

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

[![CVE-2026-92599](https://trackcve.app/badge/CVE-2026-92599.svg)](https://trackcve.app/cve/CVE-2026-92599)

Record last updated 18 Sept 2026, 20:06 UTC.