Critical
Security advisory
An invalid free in mb_detect_order can cause the application to crash or potentially result in remote code execution. This issue affects HHVM versions prior to 3.30.12, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.23.1, as well as 4.24.0, 4.25.0, 4.26.0, 4.27.0, 4.28.0, and 4.28.1.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-11930
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:35 UTC · Revision 1
Source evidence
An invalid free in mb_detect_order can cause the application to crash or potentially result in remote code execution. This issue affects HHVM versions prior to 3.30.12, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.23.1, as well as 4.24.0, 4.25.0, 4.26.0, 4.27.0, 4.28.0, and 4.28.1.
osv:CVE-2019-11930
Complete source record
{
"id": "ed976a114389a90499af3c9d514adab9ff90e037121537b0edaaa90b515091e4",
"url": "https://osv.dev/vulnerability/CVE-2019-11930",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-11930",
"summary": "An invalid free in mb_detect_order can cause the application to crash or potentially result in remote code execution. This issue affects HHVM versions prior to 3.30.12, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.23.1, as well as 4.24.0, 4.25.0, 4.26.0, 4.27.0, 4.28.0, and 4.28.1.",
"evidence": "osv:CVE-2019-11930",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2019-11930",
"aliases": [
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],
"metrics": [
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"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
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"modified": "2026-10-20T13:56:17.852652315Z",
"provider": "osv",
"references": [
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"source_id": "core-osv",
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"published_at": "2019-12-04T17:16:43.087+00:00"
}