Security advisory
An Incorrect Access Control vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows a Passenger-managed malicious application, upon spawning a child process, to report an arbitrary different PID back to Passenger's process manager. If the malicious application then generates an error, it would cause Passenger's process manager to kill said reported arbitrary PID.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-12028
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:38 UTC · Revision 1
Source evidence
An Incorrect Access Control vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows a Passenger-managed malicious application, upon spawning a child process, to report an arbitrary different PID back to Passenger's process manager. If the malicious application then generates an error, it would cause Passenger's process manager to kill said reported arbitrary PID.
osv:CVE-2018-12028
Complete source record
{
"id": "a0e6a3d104c4659f226580ba038b83282275d4833bcdb0169bcca03a9d236d13",
"url": "https://osv.dev/vulnerability/CVE-2018-12028",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-12028",
"summary": "An Incorrect Access Control vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows a Passenger-managed malicious application, upon spawning a child process, to report an arbitrary different PID back to Passenger's process manager. If the malicious application then generates an error, it would cause Passenger's process manager to kill said reported arbitrary PID.",
"evidence": "osv:CVE-2018-12028",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2018-12028",
"aliases": [
"CVE-2018-12028",
"GHSA-jjhj-8gx7-x836"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/phusion/passenger",
"type": "GIT",
"events": [
{
"introduced": "a53aa1fb31489cd27c5c34f059ed2c90ddca012b"
},
{
"fixed": "5e4d60575fadfd68913bd229990cb9f3feb393a9"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:phusion:passenger:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.3.0"
},
{
"fixed": "5.3.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"release-5.3.1",
"release-5.3.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-12028.json"
}
}
],
"modified": "2026-10-24T10:30:21.114746347Z",
"provider": "osv",
"references": [
"https://blog.phusion.nl/passenger-5-3-2",
"https://security.gentoo.org/glsa/201807-02"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2018-12028",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 430422,
"published_at": "2018-06-17T20:29:00.463+00:00"
}