Critical
Security advisory
An issue was discovered in uriparser before 0.9.0. UriQuery.c allows an out-of-bounds write via a uriComposeQuery* or uriComposeQueryEx* function because the '&' character is mishandled in certain contexts.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-19198
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:11 UTC · Revision 1
Source evidence
An issue was discovered in uriparser before 0.9.0. UriQuery.c allows an out-of-bounds write via a uriComposeQuery* or uriComposeQueryEx* function because the '&' character is mishandled in certain contexts.
osv:CVE-2018-19198
Complete source record
{
"id": "c844815ca89acdb9861154b152fb033127a7ed2164aaea7c7e181e5a1c72e58b",
"url": "https://osv.dev/vulnerability/CVE-2018-19198",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-19198",
"summary": "An issue was discovered in uriparser before 0.9.0. UriQuery.c allows an out-of-bounds write via a uriComposeQuery* or uriComposeQueryEx* function because the '&' character is mishandled in certain contexts.",
"evidence": "osv:CVE-2018-19198",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2018-19198",
"aliases": [
"CVE-2018-19198"
],
"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/uriparser/uriparser",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "0b75a002e42fe675784d1a5c2adca547f5ec5661"
},
{
"fixed": "864f5d4c127def386dd5cc926ad96934b297f04e"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:uriparser_project:uriparser:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "0.9.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "864f5d4c127def386dd5cc926ad96934b297f04e"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"uriparser-0.8.6",
"uriparser-0.8.5",
"uriparser-0.8.4",
"uriparser-0.8.3",
"uriparser-0.8.2",
"uriparser-0.8.1",
"uriparser-0.8.0.1",
"uriparser-0.8.0",
"uriparser-0.7.5",
"uriparser-0.7.9",
"uriparser-0.7.8",
"uriparser-0.7.7",
"uriparser-0.7.6",
"uriparser-0.7.4",
"uriparser-0.7.3",
"uriparser-0.7.2",
"uriparser-0.7.1",
"uriparser-0.7.0",
"uriparser-0.6.4",
"uriparser-0.6.3",
"uriparser-0.6.2",
"uriparser-0.6.1",
"uriparser-0.6.0",
"uriparser-0.5.2",
"uriparser-0.5.1",
"uriparser-0.5.0",
"uriparser-0.4.0",
"uriparser-0.3.4",
"uriparser-0.3.3",
"uriparser-0.3.2",
"uriparser-0.3.1",
"uriparser-0.3.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-19198.json",
"vanir_signatures": [
{
"id": "CVE-2018-19198-788db432",
"digest": {
"threshold": 0.9,
"line_hashes": [
"100403468009939954026720765720552592861",
"161482427211911698368924816150145763402",
"190151097438128959420271269086977651032",
"150710995914627635990660843400979939834"
]
},
"source": "https://github.com/uriparser/uriparser/commit/864f5d4c127def386dd5cc926ad96934b297f04e",
"target": {
"file": "src/UriQuery.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2018-19198-e9ac82d3",
"digest": {
"threshold": 0.9,
"line_hashes": [
"328311883274064102442555921402038281686",
"257023867471187916309104926839907291990",
"106446773495015763017148475824453056673",
"280931746396499147646466482829758555977",
"123208331935591282331249247062107345706",
"268845220720058387110604157985123069767",
"247380824432098462657860236861826047524"
]
},
"source": "https://github.com/uriparser/uriparser/commit/864f5d4c127def386dd5cc926ad96934b297f04e",
"target": {
"file": "test/test.cpp"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-20T13:17:57Z"
}
}
],
"modified": "2026-10-20T13:17:57.143434739Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHSA-2019:2280",
"https://github.com/uriparser/uriparser/blob/uriparser-0.9.0/ChangeLog",
"https://lists.debian.org/debian-lts-announce/2018/11/msg00019.html",
"https://github.com/uriparser/uriparser/commit/864f5d4c127def386dd5cc926ad96934b297f04e"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2018-19198",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 387470,
"published_at": "2018-11-12T15:29:00.227+00:00"
}