CVE-2026-111700 in ERP
Summary
by MITRE • 10/16/2026
WebVella ERP through 1.8.8 contains an sql injection vulnerability that allows any authenticated user to inject SQL through WHERE-clause text literals in the EQL query API. Attackers can send crafted single-quoted literals to POST /api/v3/en_US/eql, escaping the unsanitized EqlBuilder SQL interpolation to read unauthorized entities, including user and role tables.
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Analysis
by VulDB Data Team • 10/16/2026
The vulnerability identified in WebVella ERP versions up to 1.8.8 represents a significant security flaw within its Entity Query Language API implementation. This specific issue is classified as an SQL injection vulnerability that affects authenticated users rather than unauthenticated attackers, which narrows the attack surface but does not diminish the severity of potential data exfiltration or system compromise. The root cause lies in how the application handles input validation and query construction for EQL requests submitted to the POST /api/v3/en_US/eql endpoint. Specifically, the vulnerability arises from unsanitized text literals within WHERE clauses that are directly interpolated into SQL statements by an internal component known as EqlBuilder. This lack of proper parameterization or escaping allows malicious actors to manipulate the structure of the underlying database queries.
From a technical perspective, the flaw exploits the absence of rigorous input sanitization when processing single-quoted string literals in query parameters. When an authenticated user submits a crafted payload containing specially formatted SQL syntax within these text fields, the application fails to properly escape or validate the content before passing it to the database engine. This allows the attacker to break out of the intended context of the WHERE clause and inject arbitrary SQL commands. The EqlBuilder component, which is responsible for translating high-level query requests into executable SQL, does not adequately protect against this type of injection attack, leading to unintended execution of injected statements alongside legitimate queries.
The operational impact of this vulnerability is severe due to its potential for unauthorized data access. By leveraging the SQL injection capability, an attacker can read sensitive information stored in the database that they should not have permission to view. This includes critical system metadata such as user credentials, role definitions, and other proprietary business logic embedded within entity tables. The ability to extract this data compromises the confidentiality of the entire application ecosystem. Furthermore, depending on the specific capabilities granted to the database account used by the web application, there may be risks beyond simple read access, including potential modification or deletion of data if the underlying SQL dialect supports such operations through stacked queries or other advanced injection techniques.
This vulnerability aligns with CWE-89, which describes Improper Neutralization of Special Elements used in an SQL Command, commonly known as SQL Injection. It also maps to MITRE ATT&CK technique T1059, specifically sub-technique 004 for command scripting or database commands, and potentially T1213 if the attacker uses this access to gather information about other systems within the network architecture. The attack vector is classified as Network-based with Authentication Required, indicating that while remote exploitation is possible, it requires valid credentials first.
To mitigate this risk, immediate remediation efforts should focus on updating WebVella ERP to a version where this vulnerability has been patched by the vendor. In cases where an update is not immediately feasible, defensive measures must be implemented at the application layer and infrastructure level. Application developers should refactor the EqlBuilder logic to utilize parameterized queries or prepared statements exclusively for all database interactions involving user-supplied input. Input validation routines must be strengthened to reject or properly escape special characters in WHERE clause literals before they are processed by the query engine. Additionally, deploying a Web Application Firewall with rulesets tuned to detect SQL injection patterns can provide an additional layer of defense against exploitation attempts while permanent fixes are being deployed. Regular security audits and code reviews focusing on database interaction layers are recommended to prevent similar issues from arising in future development cycles.