# CVE-2026-17495

## Summary

- **CVE ID:** CVE-2026-17495
- **Severity:** MEDIUM
- **CVSS Score:** 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)
- **CWE:** CWE-27
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 15, 2026

## Description

moment is a JavaScript date library for parsing, validating, manipulating, and formatting dates. In versions 2.29.2 through 2.30.1, a specially crafted non-string object passed to moment.locale() can bypass the locale-name path-traversal guard. The guard assumes the input is a string, so an object whose match() method satisfies the check while its toString() returns a traversal path reaches an internal require() call with attacker-controlled path segments. This is an incomplete fix for CVE-2022-24785 and primarily affects npm (server-side) users that pass user-provided input directly to moment.locale(). The issue is fixed in moment 2.31.0, and users should upgrade to 2.31.0 or later. As a workaround, validate that any user-supplied input is a string before passing it to moment.locale().

## Affected Products

- moment — moment (2.29.2)
- moment — moment (2.31.0)

## References

- [CNA](https://github.com/moment/moment/security/advisories/GHSA-4p3w-j4w9-5jqw)
- [CNA](https://cna.openjsf.org/security-advisories.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.36%
- **EPSS Percentile:** 29.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._