CVE-2024-13798: Post Grid and Gutenberg Blocks – ComboBlocks <= 2.3.5 - Unauthenticated Paid Order Creation
The Post Grid and Gutenberg Blocks – ComboBlocks plugin for WordPress is vulnerable to unauthorized order creation in all versions up to, and including, 2.3.5. This is due to insufficient verification on form fields. This makes it possible for unauthenticated attackers to create new orders for products and mark them as paid without actually completing a payment.
Security readout for executives and security teams
Plain-English summary
This WordPress plugin flaw can let an unauthenticated visitor create product orders and mark them paid without completing payment. The likely business impact is false revenue, fulfillment mistakes, and operational cleanup rather than full site takeover.
Executive priority
Treat as a moderate ecommerce integrity issue. Prioritize sites that use the plugin for product ordering or automated fulfillment, because fake paid orders can create financial, inventory, and customer-service disruption.
Technical view
CVE-2024-13798 affects Post Grid and Gutenberg Blocks – ComboBlocks up to 2.3.5. Insufficient verification of form fields allows unauthenticated network attackers to create paid orders. CVSS 3.1 is 5.3 with low attack complexity, no privileges, no user interaction, and low integrity impact.
Likely exposure
Exposure is most relevant to WordPress sites running the named plugin at version 2.3.5 or earlier, especially where product/order form functionality is enabled. The affected metadata in the bundle is incomplete and inconsistent, so verify installed plugin identity and version directly.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. The vulnerability is remotely reachable and unauthenticated according to the CVSS vector, but the documented impact is limited to order integrity.
Researcher notes
The core weakness is CWE-20 input validation, described as insufficient verification on form fields. Public evidence identifies the vulnerable behavior and a WordPress Trac changeset, but the bundle does not provide detailed patch notes, exploit status, or precise vulnerable code paths.
Mitigation direction
Inventory WordPress sites for the named plugin and installed version.
Check vendor or WordPress plugin guidance for the fixed release tied to changeset 3242737.
Upgrade beyond version 2.3.5 if a vendor-fixed release is available.
Disable affected order-creation forms if no fixed release is available.
Reconcile paid orders against payment processor records.
Validation and detection
Confirm whether Post Grid or ComboBlocks is installed on each WordPress site.
Verify installed versions are not 2.3.5 or earlier.
Review paid orders for missing payment-provider confirmation.
Check application logs for unusual unauthenticated order creation patterns.
Confirm vendor guidance or changelog documents the validation fix.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
cwe · low confidence lookup
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-20 · source CWE mapping
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.