Vulnerability · Published May 12, 2026 · Assigned by EEF
CVE-2026-32687SQL injection via channel name in Postgrex.Notifications.listen/3 and unlisten/3
High 7.5
In plain English
A high-severity SQL injection in postgrex from elixir-ecto. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Official description
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in elixir-ecto postgrex ('Elixir.Postgrex.Notifications' module) allows SQL Injection. The channel argument passed to 'Elixir.Postgrex.Notifications':listen/3 and 'Elixir.Postgrex.Notifications':unlisten/3 is interpolated directly into LISTEN "..." / UNLISTEN "..." SQL statements without escaping the " character. An attacker who can influence the channel name can inject a " to break out of the quoted identifier and append arbitrary SQL. Because the notifications connection uses the PostgreSQL simple query protocol, multi-statement payloads are accepted, allowing DDL and DML commands to be chained (e.g. ; DROP TABLE ...; --). The same unsanitized interpolation also occurs in handle_connect/1 when replaying LISTEN commands after a reconnect. This vulnerability is associated with program file lib/postgrex/notifications.ex and program routines 'Elixir.Postgrex.Notifications':listen/3, 'Elixir.Postgrex.Notifications':unlisten/3, 'Elixir.Postgrex.Notifications':handle_connect/1. This issue affects postgrex: from 0.16.0 before 0.22.2.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| elixir-ecto | postgrex | 0.16.0 – before 0.22.2 |
| elixir-ecto | postgrex | 266b530faf9bde094e31e0e4ab851f933fadc0f5 – before 7cdedbd4316bb65f82e6a9a4f922c0ac491cb770 |
Weakness: CWE-89 · Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References
- https://github.com/elixir-ecto/ecto/security/advisories/GHSA-r73h-97w8-m54h vendor-advisory, related
- https://cna.erlef.org/cves/CVE-2026-32687.html related
- https://osv.dev/vulnerability/EEF-CVE-2026-32687 related
- https://github.com/elixir-ecto/postgrex/commit/7cdedbd4316bb65f82e6a9a4f922c0ac491cb770 patch