GSheetConnector For Gravity Forms <= 1.3.27 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Plugin Installation
Strategic Overview
- Status
- Patched in 1.3.28
- Affected Version
<= 1.3.27- CVSS
- 8.8High
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2025-8593
At a glance
CVE-2025-8593 is a high-severity Missing Authorization vulnerability in the GSheetConnector WordPress plugin, affecting versions <= 1.3.27. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 1.3.28; sites on affected versions should update now. Disclosed October 2025, reported by wesley (wcraft).
Vulnerability Overview
The GSheetConnector For Gravity Forms plugin for WordPress is vulnerable to authorization bypass in versions less than, or equal to, 1.3.27. This is due to a missing capability check on the 'install_plugin' function. This makes it possible for authenticated attackers, with subscriber-level access and above to install plugins on the target site and potentially achieve arbitrary code execution on the server under certain conditions.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-862: Missing Authorization
GSheetConnector <= 1.3.27 carries this weakness at install_plugin, and reaching it takes an account at Subscriber level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.
Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For GSheetConnector the fix is 1.3.28: builds <= 1.3.27 are affected, anything from 1.3.28 onward is not.
Remediation
Update to version 1.3.28, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: GSheetConnector 1.3.28 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in GSheetConnector – Gravity Forms Google Sheets Connector – Real-Time Sync
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C