CVE-2026-82922: ShopEx ECShop SQL Injection Vulnerability

CVE-2026-82922 Overview

CVE-2026-82922 is a SQL injection vulnerability affecting ShopEx ECShop versions up to 2.5.1. The flaw resides in the flow_update_cart function within /flow.php?step=update_cart. Attackers manipulate the rec_id parameter to inject arbitrary SQL statements into backend database queries. The vulnerability requires no authentication and can be triggered remotely over the network. Public disclosure has occurred, and the exploit details are available. The vendor was contacted prior to disclosure but did not respond. This weakness is classified under CWE-74 as improper neutralization of special elements in output used by a downstream component.

Critical Impact
Unauthenticated remote attackers can inject SQL statements through the rec_id parameter to read, modify, or destroy backend database contents in affected ECShop deployments.

Affected Products

ShopEx ECShop 2.5.1 and prior versions
Deployments exposing /flow.php?step=update_cart to untrusted networks
E-commerce sites relying on the vulnerable flow_update_cart function

Discovery Timeline

2026-08-31 - CVE-2026-82922 published to NVD
2026-09-01 - Last updated in NVD database

Technical Details for CVE-2026-82922

Vulnerability Analysis

The vulnerability exists in the ECShop shopping cart update workflow. When a client submits a POST or GET request to /flow.php?step=update_cart, the flow_update_cart function processes the rec_id argument to identify which cart record to modify. The function passes user-supplied rec_id values into a SQL query without adequate sanitization or parameterized binding. Attackers craft rec_id payloads containing SQL syntax to alter the query structure. This allows extraction of sensitive tables such as customer credentials, order data, and administrator sessions. The attack requires no authentication and can be automated against exposed storefronts.

Root Cause

The root cause is missing input validation and lack of prepared statements in the flow_update_cart function. User-controlled rec_id data is concatenated directly into SQL queries executed against the underlying database. This maps to [CWE-74] injection flaws where control characters are not neutralized before reaching the SQL interpreter.

Attack Vector

Exploitation occurs over the network against the /flow.php endpoint. An attacker sends a crafted request to the update_cart step with a malicious rec_id parameter. Because the endpoint is part of the customer-facing cart workflow, it is typically reachable without authentication. Public disclosure means automated scanners and exploitation tooling can target this endpoint at scale.

No verified proof-of-concept code is published in the referenced sources. Refer to the VulDB entry for CVE-2026-82922 and the Feishu Wiki resource for additional technical context.

Detection Methods for CVE-2026-82922

Indicators of Compromise

HTTP requests to /flow.php?step=update_cart containing SQL metacharacters such as single quotes, UNION, SELECT, SLEEP, or comment sequences in the rec_id parameter
Unusual database error messages logged by the ECShop application server referencing cart-related queries
Outbound connections from the ECShop database host to unexpected destinations following cart update activity

Detection Strategies

Deploy web application firewall (WAF) signatures that inspect the rec_id parameter for SQL injection payloads on /flow.php requests
Correlate application server access logs with database query logs to identify anomalous cart update queries returning oversized result sets
Alert on repeated failed cart update requests from the same source IP, which often indicate blind SQL injection probing

Monitoring Recommendations

Enable verbose logging of query parameters and response codes for all /flow.php endpoints
Monitor database user accounts used by ECShop for unexpected INFORMATION_SCHEMA or mysql.user queries
Track authentication anomalies and privilege changes on any accounts tied to the ECShop database schema

How to Mitigate CVE-2026-82922

Immediate Actions Required

Restrict public access to /flow.php?step=update_cart behind a WAF with SQL injection rules until a code-level fix is available
Audit database accounts used by ECShop and enforce least privilege on tables accessed by cart operations
Review application and database logs for prior exploitation targeting the rec_id parameter

Patch Information

No vendor patch is currently available. The vendor did not respond to disclosure attempts. Operators of ECShop 2.5.1 or earlier should apply compensating controls and evaluate migration to a maintained e-commerce platform. Track the VulDB advisory for future updates.

Workarounds

Add server-side input validation to reject non-integer values for the rec_id parameter before reaching flow_update_cart
Deploy virtual patching via a WAF or reverse proxy to block SQL syntax in cart-related request parameters
Isolate the ECShop database on a segmented network and disable database-level features such as LOAD_FILE and outbound network calls
Consider taking the vulnerable endpoint offline if business operations permit until a permanent fix is applied

bash

# Example ModSecurity rule to block SQLi in the rec_id parameter
SecRule ARGS:rec_id "@rx (?i)(union|select|sleep|benchmark|--|/\*|;)" \
    "id:1082922,phase:2,deny,status:403,log,\
    msg:'Potential SQLi against ECShop flow_update_cart (CVE-2026-82922)'"