HighFix available
php5 — security advisory
ext/imap/php_imap.c in PHP 5.x and 7.x before 7.3.0 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty string in the message argument to the imap_mail function.
- Products
- php5
- Affected versions
- Not specified
- Fixed versions
- 5.6.39-r0
- CVEs
- CVE-2018-19935
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 22:15 UTC · Revision 1
Source evidence
ext/imap/php_imap.c in PHP 5.x and 7.x before 7.3.0 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty string in the message argument to the imap_mail function.
osv:ALPINE-CVE-2018-19935
php5
Fixed versions: 5.6.39-r0
Complete source record
{
"id": "ce06e88fd41310b025d1496941460a685d7de45be27b001b0613e7f04d0f7ad0",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2018-19935",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2018-19935",
"summary": "ext/imap/php_imap.c in PHP 5.x and 7.x before 7.3.0 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty string in the message argument to the imap_mail function.",
"evidence": "osv:ALPINE-CVE-2018-19935",
"products": [
{
"name": {
"value": "php5",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.6.39-r0",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "ALPINE-CVE-2018-19935",
"aliases": [
"ALPINE-CVE-2018-19935"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.6.39-r0"
}
]
}
],
"package": {
"name": "php5",
"purl": "pkg:apk/alpine/php5?arch=source",
"ecosystem": "Alpine:v3.5"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-19935.json"
},
"ecosystem_specific": {}
}
],
"modified": "2026-10-23T17:24:34.717706889Z",
"provider": "osv",
"upstream": [
"CVE-2018-19935"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2018-19935"
]
},
"related_cves": [
{
"value": "CVE-2018-19935",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 416074,
"published_at": "2018-12-07T09:29:00.29+00:00"
}