Vulnerability · Published May 5, 2026 · Assigned by Wordfence
CVE-2026-1921Loco Translate <= 2.8.2 - Authenticated (Translator+) Path Traversal to Limited File Read via 'ref' Parameter
Medium 4.9
In plain English
A medium-severity path traversal in Loco Translate from timwhitlock. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities).
Official description
The Loco Translate plugin for WordPress is vulnerable to Path Traversal in all versions up to, and including, 2.8.2 via the `fsReference` AJAX route. This is due to the `findSourceFile()` method normalizing user-supplied `ref` paths containing `../` directory traversal sequences without validating that the resolved path remains within the intended bundle or content directory. This makes it possible for authenticated attackers, with Translator-level access and above (custom `loco_admin` capability required, granted to the `translator` role and administrators by default), to read arbitrary `.php`, `.js`, `.json`, and `.twig` files from the server filesystem outside the intended translation directory. Files named wp-config.php are excluded.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| timwhitlock | Loco Translate | 0 – through 2.8.2 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f9ff3058-a08c-40ed-b756-81e703b2277a?source=cve
- https://plugins.trac.wordpress.org/browser/loco-translate/tags/2.8.1/src/ajax/FsReferenceController.php#L12
- https://plugins.trac.wordpress.org/browser/loco-translate/trunk/src/ajax/FsReferenceController.php#L12
- https://plugins.trac.wordpress.org/browser/loco-translate/tags/2.8.1/src/ajax/FsReferenceController.php#L92
- https://plugins.trac.wordpress.org/browser/loco-translate/trunk/src/ajax/FsReferenceController.php#L92
- https://plugins.trac.wordpress.org/changeset/3482475/loco-translate/trunk/tpl/admin/config/version.php
- https://plugins.trac.wordpress.org/changeset?old_path=%2Floco-translate/tags/2.8.2&new_path=%2Floco-translate/tags/2.8.3