CVE-2026-17495

About vulnerability

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().

Affected product:

React , alifd-next , apollo , bunyan , bunyan-debug-stream , bunyan-gke-stackdriver , casual , cron , decap-cms , file-stream-rotator , graphql-codegen-add , graphql-codegen-time , joi , jsonwebtoken , moment , moment-timezone , rc-picker , winston-daily-rotate-file

Affected packages:

moment @ 2.30.1 (+24 more)