CVE-2026-66838

The record

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in elixir-ecto postgrex allows SQL Injection via the :comment option of Postgrex.stream/4. An attacker who can influence that value can close the comment delimiter with */ and extend the streamed statement with their own clauses, which execute under the connection's role. Ecto exposes the same option through Ecto.Repo.stream/2. Postgrex appends the comment by concatenating it into the statement text sent in the Parse message, without escaping or rejecting */. The option is validated by comment_not_present!/1 at every other execution point; stream/4 never calls it. Because Parse accepts a single command, the injection is confined to the streamed statement and further statements cannot be chained. This issue affects postgrex: from 0.19.3 before 0.22.4.

Affected packages

Related vulnerabilities

• CVE-2026-87936 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')… CWE-89
• CVE-2026-87938 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')… CWE-89
• CVE-2026-114664 Frappe Framework before 16.33.0 contains a blind SQL injection vulnerability in the… CWE-89
• CVE-2026-114577 A vulnerability was found in oretnom23 php-travel-agency-system. CWE-89
• CVE-2026-113406 BA-Workflow developed by YS-infoware has a SQL Injection vulnerability. CWE-89
• CVE-2026-113405 BA-Workflow developed by YS-infoware has a SQL Injection vulnerability. CWE-89
• CVE-2026-107081 SQL injection via identifier injection in the tableName and tableFields POST parameters… CWE-89
• CVE-2026-112150 A security flaw has been discovered in vraj404 Criminal-Management-System up to… CWE-89