2.1
LOW CVSS 4.0
CVE-2026-58225
SQL injection via unescaped dollar-quote in Postgrex.Notifications reconnect replay causes notification denial of service
Description

SQL Injection vulnerability in elixir-ecto postgrex allows an attacker who can influence a LISTEN channel name to inject SQL into the reconnect replay query, causing a denial of service of the notification connection. Postgrex.Notifications sanitizes channel names with quote_channel/1, which doubles double quotes so the name is safe inside a double-quoted identifier. This protects the single-statement LISTEN and UNLISTEN paths. On every (re)connect, however, handle_connect/1 replays all registered channels at once by concatenating their LISTEN statements and wrapping them in a dollar-quoted anonymous code block (DO $$BEGIN ... END$$). quote_channel/1 does not escape the $$ dollar-quote delimiter that opens and closes this block. The listen/3 guards only reject null bytes and names longer than 63 bytes, so a channel name containing $$ passes validation unchanged. Once such a name is embedded, its $$ prematurely terminates the outer dollar-quoted string and PostgreSQL parses the remainder as additional top-level statements. Because handle_connect/1 runs on every (re)connect, the malformed replay query is rejected each time and the notification connection never re-establishes its subscriptions, silently dropping notifications for every channel sharing that connection. An application is affected when it passes untrusted input (for example a tenant or user identifier) as a channel name to Postgrex.Notifications.listen/3. The double-quote doubling prevents forming a fully valid injected statement, so arbitrary SQL execution is not possible, but the corrupted query reliably breaks the shared notification connection for all tenants, resulting in denial of service. This issue affects postgrex: from 0.16.0 before 0.22.3.

INFO

Published Date :

July 10, 2026, 11:16 a.m.

Last Modified :

July 10, 2026, 12:17 p.m.

Remotely Exploit :

No

Source :

6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Affected Products

The following products are affected by CVE-2026-58225 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Elixir-ecto postgrex
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 4.0 LOW 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
CVSS 4.0 LOW 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Solution
Update postgrex to version 0.22.3 or later to fix SQL injection impacting notifications.
  • Update the postgrex dependency to version 0.22.3 or higher.
  • Ensure channel names are properly sanitized before use.
  • Avoid using untrusted input for channel names.
References to Advisories, Solutions, and Tools
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-58225 is associated with the following CWEs:

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-58225 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2026-58225 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jul. 10, 2026

    Action Type Old Value New Value
    Added Reference https://github.com/elixir-ecto/ecto/security/advisories/GHSA-4mw9-4qgj-m97w
    Added SSVC {'id': 'CVE-2026-58225', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-10T11:47:10.671088Z'}
  • New CVE Received by 6b3ad84c-e1a6-4bf7-a703-f496b71e49db

    Jul. 10, 2026

    Action Type Old Value New Value
    Added Affected [{'cpes': ['cpe:2.3:a:elixir-ecto:postgrex:*:*:*:*:*:*:*:*'], 'repo': 'https://github.com/elixir-ecto/postgrex', 'vendor': 'elixir-ecto', 'modules': ["'Elixir.Postgrex.Notifications'"], 'product': 'postgrex', 'versions': [{'status': 'affected', 'version': '0.16.0', 'lessThan': '0.22.3', 'versionType': 'semver'}], 'packageURL': 'pkg:hex/postgrex', 'packageName': 'postgrex', 'programFiles': ['lib/postgrex/notifications.ex'], 'collectionURL': 'https://repo.hex.pm', 'defaultStatus': 'unaffected', 'programRoutines': [{'name': "'Elixir.Postgrex.Notifications':handle_connect/1"}, {'name': "'Elixir.Postgrex.Notifications':listen/3"}]}, {'cpes': ['cpe:2.3:a:elixir-ecto:postgrex:*:*:*:*:*:*:*:*'], 'repo': 'https://github.com/elixir-ecto/postgrex', 'vendor': 'elixir-ecto', 'modules': ["'Elixir.Postgrex.Notifications'"], 'product': 'postgrex', 'versions': [{'status': 'affected', 'version': '266b530faf9bde094e31e0e4ab851f933fadc0f5', 'lessThan': '795c6062f62c4394272ff4b89170688857b4f841', 'versionType': 'git'}], 'packageURL': 'pkg:github/elixir-ecto/postgrex', 'packageName': 'elixir-ecto/postgrex', 'programFiles': ['lib/postgrex/notifications.ex'], 'collectionURL': 'https://github.com', 'defaultStatus': 'unaffected', 'programRoutines': [{'name': "'Elixir.Postgrex.Notifications':handle_connect/1"}, {'name': "'Elixir.Postgrex.Notifications':listen/3"}]}]
    Added Description SQL Injection vulnerability in elixir-ecto postgrex allows an attacker who can influence a LISTEN channel name to inject SQL into the reconnect replay query, causing a denial of service of the notification connection. Postgrex.Notifications sanitizes channel names with quote_channel/1, which doubles double quotes so the name is safe inside a double-quoted identifier. This protects the single-statement LISTEN and UNLISTEN paths. On every (re)connect, however, handle_connect/1 replays all registered channels at once by concatenating their LISTEN statements and wrapping them in a dollar-quoted anonymous code block (DO $$BEGIN ... END$$). quote_channel/1 does not escape the $$ dollar-quote delimiter that opens and closes this block. The listen/3 guards only reject null bytes and names longer than 63 bytes, so a channel name containing $$ passes validation unchanged. Once such a name is embedded, its $$ prematurely terminates the outer dollar-quoted string and PostgreSQL parses the remainder as additional top-level statements. Because handle_connect/1 runs on every (re)connect, the malformed replay query is rejected each time and the notification connection never re-establishes its subscriptions, silently dropping notifications for every channel sharing that connection. An application is affected when it passes untrusted input (for example a tenant or user identifier) as a channel name to Postgrex.Notifications.listen/3. The double-quote doubling prevents forming a fully valid injected statement, so arbitrary SQL execution is not possible, but the corrupted query reliably breaks the shared notification connection for all tenants, resulting in denial of service. This issue affects postgrex: from 0.16.0 before 0.22.3.
    Added CVSS V4.0 AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CWE CWE-89
    Added Reference https://cna.erlef.org/cves/CVE-2026-58225.html
    Added Reference https://github.com/elixir-ecto/ecto/security/advisories/GHSA-4mw9-4qgj-m97w
    Added Reference https://github.com/elixir-ecto/postgrex/commit/795c6062f62c4394272ff4b89170688857b4f841
    Added Reference https://osv.dev/vulnerability/EEF-CVE-2026-58225
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.