# Fast Index <= 2.2 - Unauthenticated Sensitive Information Exposure via Publicly Stored Service Account Key Files

- **ID:** WPSEC-2026-1123
- **Plugin:** Fast Index for Google Indexing API (`fast-index`), https://wordpress.org/plugins/fast-index/
- **Affected versions:** all versions before 3.0.0
- **Fixed in:** 3.0.0 (Update to 3.0.0 or later.)
- **Severity:** Medium 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
- **Weakness:** CWE-552
- **Usage among sites WPSec scans:** plugin Low, affected versions None seen (as of 2026-10-16)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/fast-index
- **Fix released:** 2026-10-15
- **Published:** 2026-10-16
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1123/

## Description

The Fast Index for Google Indexing API plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.2 due to uploaded Google service account JSON key files, including their private keys, being stored in the publicly accessible uploads folder. This makes it possible for unauthenticated attackers who know or can guess the file's address to download the service account key, which can grant owner-level access to the site's Google Search Console property and use of the site's Indexing API quota.

## References

- https://wpsec.com/vuln/WPSEC-2026-1123/
- https://plugins.svn.wordpress.org/fast-index/tags/3.0.0/
- https://wordpress.org/plugins/fast-index/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1123/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.