Critical
Security advisory
An issue was discovered in Artifex MuJS 1.0.5. regcompx in regexp.c does not restrict regular expression program size, leading to an overflow of the parsed syntax list size.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-12798
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:19 UTC · Revision 1
Source evidence
An issue was discovered in Artifex MuJS 1.0.5. regcompx in regexp.c does not restrict regular expression program size, leading to an overflow of the parsed syntax list size.
osv:CVE-2019-12798
Complete source record
{
"id": "e3f55d25402303ba8d48376f808b2bcc51282ed005e85ab84cceff5882d62502",
"url": "https://osv.dev/vulnerability/CVE-2019-12798",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-12798",
"summary": "An issue was discovered in Artifex MuJS 1.0.5. regcompx in regexp.c does not restrict regular expression program size, leading to an overflow of the parsed syntax list size.",
"evidence": "osv:CVE-2019-12798",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2019-12798",
"aliases": [
"CVE-2019-12798"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/ccxvii/mujs",
"type": "GIT",
"events": [
{
"introduced": "7448a82448aa4eff952a4fdb836f197b844e3d1d"
},
{
"last_affected": "7448a82448aa4eff952a4fdb836f197b844e3d1d"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:artifex:mujs:1.0.5:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.5"
},
{
"last_affected": "1.0.5"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"1.0.5"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-12798.json"
}
}
],
"modified": "2026-10-24T10:30:37.708401007Z",
"provider": "osv",
"references": [],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2019-12798",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 434287,
"published_at": "2019-06-13T17:29:00.303+00:00"
}