CVE-2025-53465 – This vulnerability allows attackers to inject m... (How to Fix)

Q: What is the severity of CVE-2025-53465?

CVE-2025-53465 has a CVSS score of 7.2 (HIGH). This vulnerability allows attackers to inject malicious objects through deserialization of untrusted data in the GSheets Connector WordPress plugin. Successful exploitation could lead to remote code execution or data manipulation. All WordPress sites using affected versions of the GSheets Connector plugin are vulnerable.

📋 TL;DR

This vulnerability allows attackers to inject malicious objects through deserialization of untrusted data in the GSheets Connector WordPress plugin. Successful exploitation could lead to remote code execution or data manipulation. All WordPress sites using affected versions of the GSheets Connector plugin are vulnerable.

💻 Affected Systems

Products:

raoinfotech GSheets Connector WordPress plugin

Versions: All versions up to and including 1.1.1

Operating Systems: Any OS running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: All default configurations of affected plugin versions are vulnerable.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:

Review the CVE details at NVD
Check vendor security advisories for your specific version
Test if the vulnerability is exploitable in your environment
Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution leading to complete site compromise, data theft, or server takeover.

🟠

Likely Case

Arbitrary file upload leading to backdoor installation, data exfiltration, or site defacement.

🟢

If Mitigated

Limited impact if proper input validation and output encoding are implemented elsewhere.

🌐 Internet-Facing: HIGH - WordPress plugins are typically internet-facing and accessible to attackers.

🏢 Internal Only: MEDIUM - Internal WordPress installations could still be targeted via phishing or compromised accounts.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: MEDIUM

Deserialization vulnerabilities are commonly weaponized. The CWE-502 pattern is well-known and exploitable.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.1.2 or later

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/sheetlink/vulnerability/wordpress-gsheets-connector-plugin-1-1-1-php-object-injection-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins. 3. Find GSheets Connector. 4. Click 'Update Now' if available. 5. If not, download version 1.1.2+ from WordPress repository. 6. Deactivate old plugin. 7. Upload and activate new version.

🔧 Temporary Workarounds

Disable Plugin

all

Temporarily disable the vulnerable plugin until patched.

wp plugin deactivate gsheets-connector

Restrict Access

all

Use web application firewall to block requests to plugin endpoints.

🧯 If You Can't Patch

Remove the GSheets Connector plugin completely from your WordPress installation.
Implement strict input validation and output encoding for all user-supplied data.

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > GSheets Connector version. If version is 1.1.1 or lower, you are vulnerable.

Check Version:

wp plugin get gsheets-connector --field=version

Verify Fix Applied:

After update, verify plugin version shows 1.1.2 or higher in WordPress plugins list.

📡 Detection & Monitoring

Log Indicators:

Unusual POST requests to plugin endpoints
PHP object injection patterns in logs
Unexpected file uploads or modifications

Network Indicators:

HTTP requests containing serialized PHP objects
Traffic to known exploit patterns for CWE-502

SIEM Query:

source="wordpress.log" AND ("gsheets-connector" OR "object injection" OR "unserialize")

📊 Metadata

CVE ID: CVE-2025-53465

CVSS v3 Score: 7.2 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-502

EPSS Score: 0.11% exploit probability (28.8th percentile)

Published: September 22, 2025

Last Updated: September 22, 2025

🔗 References

https://patchstack.com/database/wordpress/plugin/sheetlink/vulnerability/wordpress-gsheets-connector-plugin-1-1-1-php-object-injection-vulnerability?_s_id=cve

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