CVE-2021-47763: 
PHP vulnerability analysis and mitigation

CVE-2021-47763 is a SQL injection vulnerability in the Aimeos Laravel e-commerce platform (version 2021.10 LTS) affecting the sort parameter of the JSON API. Unauthenticated attackers can send crafted GET requests to the jsonapi/review endpoint to inject malicious database queries and extract sensitive schema information such as table and column names. The vulnerability was published to NVD on January 15, 2026, and carries a CVSS v3.1 base score of 8.2 (High) and a CVSS v4.0 base score of 8.8 (High) (GitHub Advisory, NVD).

The root cause is improper neutralization of special elements in an SQL command (CWE-89), where user-supplied input to the sort parameter is incorporated into database queries without adequate sanitization or parameterization. An attacker can exploit this by sending a crafted HTTP GET request to the /jsonapi/review endpoint with a malicious sort value, causing the backend to execute attacker-controlled SQL fragments. No authentication, special privileges, or user interaction is required, and attack complexity is low. A public exploit is referenced on Exploit-DB (EDB-50538) (NVD, GitHub Advisory).

Successful exploitation allows unauthenticated remote attackers to extract sensitive database metadata, including table and column names, and potentially enumerate or exfiltrate application data stored in the underlying database. The primary impact is high confidentiality loss, with a low integrity impact (e.g., potential for unauthorized data modification depending on database permissions), and no direct availability impact. Depending on the database user's privileges, further exploitation could enable broader data exfiltration, credential harvesting from the database, or lateral movement within the application's data layer (GitHub Advisory, NVD).

A public exploit for this vulnerability is listed on Exploit-DB (exploit ID 50538), indicating that weaponized proof-of-concept code is publicly available (NVD). The EPSS score is approximately 0.02–0.033%, placing it in the lower percentiles for near-term exploitation probability. No confirmed in-the-wild exploitation or specific threat actor attribution has been reported at this time, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog (GitHub Advisory).

1. Reconnaissance: Identify internet-facing Aimeos Laravel installations running version 2021.10 LTS using search engines (e.g., Shodan, Censys) or by fingerprinting the /jsonapi/review endpoint.
2. Confirm endpoint availability: Send a baseline GET request to /jsonapi/review?sort=id to confirm the endpoint responds normally and the application is potentially vulnerable.
3. Inject SQL payload: Craft a malicious sort parameter value containing SQL injection syntax (e.g., sort=id,(SELECT+1+FROM+(SELECT+SLEEP(5))a)) to test for time-based blind SQL injection, or use UNION-based payloads to extract data.
4. Extract schema information: Use error-based or blind SQL injection techniques to enumerate database table names and column names from the information schema (e.g., sort=id,(SELECT+table_name+FROM+information_schema.tables+LIMIT+1)).
5. Exfiltrate data: Leverage identified schema details to craft further queries targeting sensitive tables (e.g., user credentials, order data, payment information) and extract their contents.
6. Automate with SQLMap: Use automated tools such as sqlmap -u 'https://target/jsonapi/review?sort=id' --dbs to systematically enumerate and dump database contents (NVD, GitHub Advisory).

• Network: Unusual or repeated GET requests to /jsonapi/review with abnormal or encoded sort parameter values (e.g., containing SQL keywords like SELECT, UNION, FROM, SLEEP, information_schema); high volume of requests to this endpoint from a single IP.
• Logs: Web server or application logs showing requests to /jsonapi/review?sort= with SQL syntax fragments; database error messages logged related to malformed SQL queries; unusually long query execution times suggesting time-based blind SQL injection.
• Application: Unexpected database queries referencing information_schema.tables or information_schema.columns in database query logs; queries returning large volumes of schema metadata.

The GitHub Advisory (GHSA-hm9j-cgmm-2w36) notes that no patched version has been formally listed for the aimeos/aimeos-laravel 2021.10 LTS package; users should upgrade to a newer supported release of Aimeos that addresses this issue (GitHub Advisory). As interim mitigations, restrict access to the /jsonapi/review endpoint using network-level controls or web application firewall (WAF) rules that block SQL injection patterns in the sort parameter. Review and audit database user permissions to enforce least privilege, limiting the damage potential of any successful injection. Monitor database and application logs for anomalous query patterns indicative of exploitation attempts.

The vulnerability received automated coverage from security aggregators including RedPacket Security and CVEFeed shortly after its NVD publication in January 2026. A technical write-up was published at infinitsec.net detailing the vulnerability. The CISA weekly vulnerability bulletin (SB26-020) for the week of January 12, 2026 referenced this CVE. No notable vendor statements or significant researcher commentary beyond automated aggregation have been identified.