Medium
re2c — security advisory
re2c before 2.0 has uncontrolled recursion that causes stack consumption in find_fixed_tags.
- Products
- re2c
- Affected versions
- 3.0-2, 3.1-1, 4.0.1-1, 4.0.2-1, 4.1-1, 4.2-1, 4.3-1, 4.3-2, 4.3.1-1, 4.4-1, 4.5.1-1, 4.6-1
- Fixed versions
- Not specified
- CVEs
- CVE-2018-21232
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 00:13 UTC · Revision 1
Source evidence
re2c before 2.0 has uncontrolled recursion that causes stack consumption in find_fixed_tags.
osv:DEBIAN-CVE-2018-21232
re2c
Fixed versions: Not specified
re2c
Fixed versions: Not specified
re2c
Fixed versions: Not specified
Complete source record
{
"id": "012e28ab11ff1888c785c43545673accb7bc46be72bb7979757ef2009d9ae4d0",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2018-21232",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2018-21232",
"summary": "re2c before 2.0 has uncontrolled recursion that causes stack consumption in find_fixed_tags.",
"evidence": "osv:DEBIAN-CVE-2018-21232",
"products": [
{
"name": {
"value": "re2c",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.3-2",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.5.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.6-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "re2c",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.3-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.3-2",
"evidence": "/affected/1/versions"
},
{
"value": "4.3.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.5.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.6-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "re2c",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "4.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "4.3-1",
"evidence": "/affected/2/versions"
},
{
"value": "4.3-2",
"evidence": "/affected/2/versions"
},
{
"value": "4.3.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "4.4-1",
"evidence": "/affected/2/versions"
},
{
"value": "4.5.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "4.6-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2018-21232",
"aliases": [
"DEBIAN-CVE-2018-21232"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "re2c",
"purl": "pkg:deb/debian/re2c?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"3.0-2",
"3.1-1",
"4.0.1-1",
"4.0.2-1",
"4.1-1",
"4.2-1",
"4.3-1",
"4.3-2",
"4.3.1-1",
"4.4-1",
"4.5.1-1",
"4.6-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-21232.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "re2c",
"purl": "pkg:deb/debian/re2c?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"4.1-1",
"4.2-1",
"4.3-1",
"4.3-2",
"4.3.1-1",
"4.4-1",
"4.5.1-1",
"4.6-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-21232.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "re2c",
"purl": "pkg:deb/debian/re2c?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"4.1-1",
"4.2-1",
"4.3-1",
"4.3-2",
"4.3.1-1",
"4.4-1",
"4.5.1-1",
"4.6-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-21232.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
],
"modified": "2026-10-23T18:03:06.023353732Z",
"provider": "osv",
"upstream": [
"CVE-2018-21232"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2018-21232"
]
},
"related_cves": [
{
"value": "CVE-2018-21232",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 420405,
"published_at": "2020-04-29T14:15:14.417+00:00"
}