CVE-2026-1916
The WPGSI: Spreadsheet Integration plugin for WordPress is vulnerable to unauthorized modification and loss of data due to missing capability checks and an insecure au…
Published Feb 25, 2026 · updated Jun 17, 2026
The WPGSI: Spreadsheet Integration plugin for WordPress is vulnerable to unauthorized modification and loss of data due to missing capability checks and an insecure authentication mechanism on the and REST API functions in all versions up to, and including, 3.8.3. Both REST endpoints use , allowing unauthenticated access. The plugin's custom token-based validation relies on a Base64-encoded JSON object containing the user ID and email address, but is not cryptographically signed. This makes it possible for unauthenticated attackers to forge tokens using publicly enumerable information (admin user ID and email) to create, modify, and delete arbitrary WordPress posts and pages, granted they know the administrator's email address and an active integration ID with remote updates enabled.
Code
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Timeline
Detection, updates, and resolution for this record.
Feb 25, 2026 · NIST NVD
Detected
The WPGSI: Spreadsheet Integration plugin for WordPress is vulnerable to unauthorized modification and loss of data due to missing capability checks and an insecure authentication mechanism on the and REST API functions in all versions up to, and including, 3.8.3. Both REST endpoints use , allowing unauthenticated access. The plugin's custom token-based validation relies on a Base64-encoded JSON o
Jun 17, 2026 · NIST NVD
Updated
The WPGSI: Spreadsheet Integration plugin for WordPress is vulnerable to unauthorized modification and loss of data due to missing capability checks and an insecure authentication mechanism on the and REST API functions in all versions up to, and including, 3.8.3. Both REST endpoints use , allowing unauthenticated access. The plugin's custom token-based validation relies on a Base64-encoded JSON o
Sources
- CVE.orgVulnerability recordCVE-2026-1916
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-1916
The WPGSI: Spreadsheet Integration plugin for WordPress is vulnerable to unauthorized modification and loss of data due to missing capability checks and an insecure authentication mechanism on the and REST API functions in all
nvd.nist.gov