Search criteria
1 vulnerability by elixir-ecto
CVE-2026-32687 (GCVE-0-2026-32687)
Vulnerability from cvelistv5 – Published: 2026-05-12 14:18 – Updated: 2026-05-26 19:46
VLAI
Title
SQL injection via channel name in Postgrex.Notifications.listen/3 and unlisten/3
Summary
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, from pkg:github/elixir-ecto/postgrex@266b530faf9bde094e31e0e4ab851f933fadc0f5 before 0.22.2.
Severity
CWE
- CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/elixir-ecto/ecto/security/advi… | vendor-advisoryrelated |
| 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/7c… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| elixir-ecto | postgrex |
Affected:
0.16.0 , < 0.22.2
(semver)
cpe:2.3:a:elixir-ecto:postgrex:*:*:*:*:*:*:*:* |
|
| elixir-ecto | postgrex |
Affected:
266b530faf9bde094e31e0e4ab851f933fadc0f5 , < 7cdedbd4316bb65f82e6a9a4f922c0ac491cb770
(git)
cpe:2.3:a:elixir-ecto:postgrex:*:*:*:*:*:*:*:* |
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-32687",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-12T19:44:22.093287Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-12T19:44:35.571Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:elixir-ecto:postgrex:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.Postgrex.Notifications\u0027"
],
"packageName": "postgrex",
"packageURL": "pkg:hex/postgrex",
"product": "postgrex",
"programFiles": [
"lib/postgrex/notifications.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.Postgrex.Notifications\u0027:listen/3"
},
{
"name": "\u0027Elixir.Postgrex.Notifications\u0027:unlisten/3"
},
{
"name": "\u0027Elixir.Postgrex.Notifications\u0027:handle_connect/1"
}
],
"repo": "https://github.com/elixir-ecto/postgrex.git",
"vendor": "elixir-ecto",
"versions": [
{
"lessThan": "0.22.2",
"status": "affected",
"version": "0.16.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:elixir-ecto:postgrex:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.Postgrex.Notifications\u0027"
],
"packageName": "elixir-ecto/postgrex",
"packageURL": "pkg:github/elixir-ecto/postgrex",
"product": "postgrex",
"programFiles": [
"lib/postgrex/notifications.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.Postgrex.Notifications\u0027:listen/3"
},
{
"name": "\u0027Elixir.Postgrex.Notifications\u0027:unlisten/3"
},
{
"name": "\u0027Elixir.Postgrex.Notifications\u0027:handle_connect/1"
}
],
"repo": "https://github.com/elixir-ecto/postgrex.git",
"vendor": "elixir-ecto",
"versions": [
{
"lessThan": "7cdedbd4316bb65f82e6a9a4f922c0ac491cb770",
"status": "affected",
"version": "266b530faf9bde094e31e0e4ab851f933fadc0f5",
"versionType": "git"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eThe application must call \u003ctt\u003e\u0027Elixir.Postgrex.Notifications\u0027:listen/3\u003c/tt\u003e or \u003ctt\u003e\u0027Elixir.Postgrex.Notifications\u0027:unlisten/3\u003c/tt\u003e with a channel name derived from untrusted user input.\u003c/p\u003e"
}
],
"value": "The application must call \u0027Elixir.Postgrex.Notifications\u0027:listen/3 or \u0027Elixir.Postgrex.Notifications\u0027:unlisten/3 with a channel name derived from untrusted user input."
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:elixir-ecto:postgrex:*:*:*:*:*:*:*:*",
"versionEndExcluding": "0.22.2",
"versionStartIncluding": "0.16.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Peter Ullrich"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Improper Neutralization of Special Elements used in an SQL Command (\u0027SQL Injection\u0027) vulnerability in elixir-ecto postgrex (\u003ctt\u003e\u0027Elixir.Postgrex.Notifications\u0027\u003c/tt\u003e module) allows SQL Injection.\u003cp\u003eThe \u003ctt\u003echannel\u003c/tt\u003e argument passed to \u003ctt\u003e\u0027Elixir.Postgrex.Notifications\u0027:listen/3\u003c/tt\u003e and \u003ctt\u003e\u0027Elixir.Postgrex.Notifications\u0027:unlisten/3\u003c/tt\u003e is interpolated directly into \u003ctt\u003eLISTEN \"...\"\u003c/tt\u003e / \u003ctt\u003eUNLISTEN \"...\"\u003c/tt\u003e SQL statements without escaping the \u003ctt\u003e\"\u003c/tt\u003e character. An attacker who can influence the channel name can inject a \u003ctt\u003e\"\u003c/tt\u003e 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. \u003ctt\u003e; DROP TABLE ...; --\u003c/tt\u003e). The same unsanitized interpolation also occurs in \u003ctt\u003ehandle_connect/1\u003c/tt\u003e when replaying LISTEN commands after a reconnect.\u003c/p\u003e\u003cp\u003eThis vulnerability is associated with program file \u003ctt\u003elib/postgrex/notifications.ex\u003c/tt\u003e and program routines \u003ctt\u003e\u0027Elixir.Postgrex.Notifications\u0027:listen/3\u003c/tt\u003e, \u003ctt\u003e\u0027Elixir.Postgrex.Notifications\u0027:unlisten/3\u003c/tt\u003e, \u003ctt\u003e\u0027Elixir.Postgrex.Notifications\u0027:handle_connect/1\u003c/tt\u003e.\u003c/p\u003e\u003cp\u003eThis issue affects postgrex: from 0.16.0 before 0.22.2, from pkg:github/elixir-ecto/postgrex@266b530faf9bde094e31e0e4ab851f933fadc0f5 before 0.22.2.\u003c/p\u003e"
}
],
"value": "Improper Neutralization of Special Elements used in an SQL Command (\u0027SQL Injection\u0027) vulnerability in elixir-ecto postgrex (\u0027Elixir.Postgrex.Notifications\u0027 module) allows SQL Injection.\n\nThe channel argument passed to \u0027Elixir.Postgrex.Notifications\u0027:listen/3 and \u0027Elixir.Postgrex.Notifications\u0027: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.\n\nThis vulnerability is associated with program file lib/postgrex/notifications.ex and program routines \u0027Elixir.Postgrex.Notifications\u0027:listen/3, \u0027Elixir.Postgrex.Notifications\u0027:unlisten/3, \u0027Elixir.Postgrex.Notifications\u0027:handle_connect/1.\n\nThis issue affects postgrex: from 0.16.0 before 0.22.2, from pkg:github/elixir-ecto/postgrex@266b530faf9bde094e31e0e4ab851f933fadc0f5 before 0.22.2."
}
],
"impacts": [
{
"capecId": "CAPEC-66",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-66 SQL Injection"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-89",
"description": "CWE-89 Improper Neutralization of Special Elements used in an SQL Command (\u0027SQL Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-26T19:46:52.054Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/elixir-ecto/ecto/security/advisories/GHSA-r73h-97w8-m54h"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-32687.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-32687"
},
{
"tags": [
"patch"
],
"url": "https://github.com/elixir-ecto/postgrex/commit/7cdedbd4316bb65f82e6a9a4f922c0ac491cb770"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "SQL injection via channel name in Postgrex.Notifications.listen/3 and unlisten/3",
"x_generator": {
"engine": "cvelib 1.8.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-32687",
"datePublished": "2026-05-12T14:18:07.607Z",
"dateReserved": "2026-03-13T09:12:14.475Z",
"dateUpdated": "2026-05-26T19:46:52.054Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}