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CVE-2026-32687— SQL injection via channel name in Postgrex.Notifications.listen/3 and unlisten/3

Quick assessment

Affected
elixir-ecto postgrex
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Postgrex是elixir-ecto开源的一个Elixir语言的PostgreSQL数据库驱动。 postgrex 0.16.0版本至0.22.2之前版本存在SQL注入漏洞，该漏洞源于Elixir.Postgrex.Notifications模块中未对特殊元素进行中和，可能导致SQL注入攻击。

CVSS 7.5 · High EPSS 0.20% · P10

Affected Version Matrix 2

VendorProduct Version RangeStatus
elixir-ecto postgrex 0.16.0< 0.22.2 affected
266b530faf9bde094e31e0e4ab851f933fadc0f5< 7cdedbd4316bb65f82e6a9a4f922c0ac491cb770 affected
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I. Basic Information for CVE-2026-32687

Vulnerability Information
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Vulnerability Title
SQL injection via channel name in Postgrex.Notifications.listen/3 and unlisten/3
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Postgrex SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Postgrex是elixir-ecto开源的一个Elixir语言的PostgreSQL数据库驱动。 postgrex 0.16.0版本至0.22.2之前版本存在SQL注入漏洞，该漏洞源于Elixir.Postgrex.Notifications模块中未对特殊元素进行中和，可能导致SQL注入攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
elixir-ecto postgrex 0.16.0 ~ 0.22.2 cpe:2.3:a:elixir-ecto:postgrex:*:*:*:*:*:*:*:*
elixir-ecto postgrex 266b530faf9bde094e31e0e4ab851f933fadc0f5 ~ 7cdedbd4316bb65f82e6a9a4f922c0ac491cb770 cpe:2.3:a:elixir-ecto:postgrex:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-32687

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 10102 chars
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III. Intelligence Information for CVE-2026-32687

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Patches & Fixes for CVE-2026-32687 (1)

Vendor Advisories for CVE-2026-32687 (3)

IV. Related Vulnerabilities

Same product: postgrex
Same vendor: elixir-ecto
Same weakness: CWE-89

V. Comments for CVE-2026-32687

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