CVE-2025-53988 Overview
CVE-2025-53988 is an information disclosure vulnerability in the Crocoblock JetBlocks For Elementor WordPress plugin. The flaw allows authenticated attackers with low privileges to retrieve embedded sensitive data from server responses. The issue affects all plugin versions up to and including 1.3.18.
The vulnerability is classified under [CWE-201] Insertion of Sensitive Information Into Sent Data. Attackers can exploit the flaw over the network without user interaction. Site operators running vulnerable installations risk exposure of confidential data stored in plugin-rendered content.
Critical Impact
Authenticated attackers can retrieve embedded sensitive information from JetBlocks For Elementor responses, potentially exposing configuration data, credentials, or private content elements.
Affected Products
- Crocoblock JetBlocks For Elementor plugin versions up to and including 1.3.18
- WordPress sites using the jet-blocks plugin with Elementor
- Installations without the vendor-supplied patch applied
Discovery Timeline
- 2025-08-20 - CVE-2025-53988 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-53988
Vulnerability Analysis
The vulnerability resides in how JetBlocks For Elementor handles data included in outbound responses. The plugin embeds sensitive information within data sent to users who should not receive it. Because access checks do not properly restrict what information is included, low-privileged authenticated users can retrieve confidential content.
The issue is a sensitive data exposure weakness rather than a code execution flaw. Confidentiality impact is high while integrity and availability remain unaffected. Exploitation requires only a low-privileged authenticated session, which lowers the barrier for insider or compromised-account attacks.
Refer to the Patchstack Vulnerability Report for the vendor-tracked technical details.
Root Cause
The root cause is improper filtering of sensitive fields before inclusion in server-generated responses. The plugin does not evaluate the requesting user's authorization level against the confidentiality of the data being rendered or transmitted. This design gap corresponds directly to CWE-201.
Attack Vector
Exploitation occurs over the network against a WordPress site running the vulnerable jet-blocks plugin. An attacker authenticates with any low-privileged account, such as a subscriber or contributor, and issues requests to plugin-controlled endpoints or renders. The response returns embedded sensitive data that should have been withheld based on the requestor's role.
No verified public proof-of-concept has been published. See the Patchstack advisory for exploitation context.
Detection Methods for CVE-2025-53988
Indicators of Compromise
- Unexpected requests from low-privileged accounts targeting jet-blocks plugin endpoints or Elementor-rendered pages
- Anomalous outbound response sizes from pages containing JetBlocks widgets
- Repeated access to authenticated URLs by accounts that historically only viewed public content
Detection Strategies
- Inventory WordPress installations to identify sites running jet-blocks at version 1.3.18 or earlier
- Review web server access logs for authenticated requests to JetBlocks-related routes originating from low-privileged sessions
- Correlate WordPress audit logs with HTTP response patterns to identify data-harvesting behavior
Monitoring Recommendations
- Enable WordPress audit logging plugins to record actions by subscriber and contributor accounts
- Alert on newly created low-privileged accounts that immediately access plugin-rendered content
- Monitor egress traffic from the WordPress host for unusual response payload sizes tied to JetBlocks pages
How to Mitigate CVE-2025-53988
Immediate Actions Required
- Identify all WordPress sites running JetBlocks For Elementor version 1.3.18 or earlier
- Update the jet-blocks plugin to a version above 1.3.18 once a fixed release is available from Crocoblock
- Audit existing user accounts and remove or downgrade unnecessary low-privileged accounts
- Rotate any credentials or secrets that may have been embedded in plugin-rendered content
Patch Information
Crocoblock has been notified through the Patchstack coordinated disclosure program. Administrators should consult the Patchstack advisory and the Crocoblock changelog for the fixed release version and apply the update through the WordPress plugin manager.
Workarounds
- Disable the JetBlocks For Elementor plugin until a patched version is installed
- Restrict registration of low-privileged accounts and enforce approval workflows for new users
- Deploy a web application firewall rule to limit authenticated access to JetBlocks endpoints
- Remove sensitive data from pages built with JetBlocks widgets until the patch is applied
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
