CVE-2026-17495 · GHSA-4p3w-j4w9-5jqw

moment vulnerable to Path Traversal via crafted non-string locale name

Risk score: 46/100
CVSS: 5.9 v3.1
Exploit chance (30 days): 0.4%
Published: 29 Sep 2026

Open in the live forecast Today's forecast

What to know

What it is: moment before 2.31.0 is vulnerable to path traversal in moment.locale(). When an application passes a non-string, attacker-influenced value to moment.locale(), a specially crafted object can bypass the locale name validation and cause moment to load a file from an attacker-controlled path. This is a further bypass of …
Affected: moment (npm) >= 2.29.2, < 2.31.0
Fix: Upgrade moment to 2.31.0 or later.
Exploitation: No known exploitation

Why it is Yellow

CVSS 5.9 medium
On your watchlist: npm

Affected packages

Package	Ecosystem	Vulnerable	Fixed in
moment	npm	>= 2.29.2, < 2.31.0	2.31.0

References

Original description

### Impact moment before 2.31.0 is vulnerable to path traversal in `moment.locale()`. When an application passes a non-string, attacker-influenced value to `moment.locale()`, a specially crafted object can bypass the locale name validation and cause moment to load a file from an attacker-controlled path. This is a further bypass of the validation added in 2.29.2 for [CVE-2022-24785](https://github.com/moment/moment/security/advisories/GHSA-8hfj-j24r-96c4). This affects server-side (npm) users only. Plain string input is not affected: the existing validation correctly rejects strings that contain path separators. ### Patches This issue is patched in moment 2.31.0. ### Workarounds Validate that any user-supplied input is a string before passing it to `moment.locale()`.

Last activity 29 Sep 2026. Patch Forecast updates every hour.