jackson-databind — security advisory
A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint, the service has the mysql-connector-java jar (8.0.14 or earlier) in the classpath, and an attacker can host a crafted MySQL server reachable by the victim, an attacker can send a crafted JSON message that allows them to read arbitrary local files on the server. This occurs because of missing com.mysql.cj.jdbc.admin.MiniAdmin validation.
- Products
- jackson-databind
- Affected versions
- Not specified
- Fixed versions
- 2.9.8-2
- CVEs
- CVE-2019-12086
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 28 Oct 2026, 11:06 UTC · Revision 1
Source evidence
A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint, the service has the mysql-connector-java jar (8.0.14 or earlier) in the classpath, and an attacker can host a crafted MySQL server reachable by the victim, an attacker can send a crafted JSON message that allows them to read arbitrary local files on the server. This occurs because of missing com.mysql.cj.jdbc.admin.MiniAdmin validation.
osv:DEBIAN-CVE-2019-12086
jackson-databind
Fixed versions: 2.9.8-2
jackson-databind
Fixed versions: 2.9.8-2
jackson-databind
Fixed versions: 2.9.8-2
Complete source record
{
"id": "7d346844616065ad7101bb07f54dbc4b52a86fd71ab554f5de77d913082c2e2c",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2019-12086",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2019-12086",
"summary": "A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint, the service has the mysql-connector-java jar (8.0.14 or earlier) in the classpath, and an attacker can host a crafted MySQL server reachable by the victim, an attacker can send a crafted JSON message that allows them to read arbitrary local files on the server. This occurs because of missing com.mysql.cj.jdbc.admin.MiniAdmin validation.",
"evidence": "osv:DEBIAN-CVE-2019-12086",
"products": [
{
"name": {
"value": "jackson-databind",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.9.8-2",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/1/package/name"
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{
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"fixed_versions": [
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"evidence": "/affected/2/ranges"
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],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2019-12086",
"aliases": [
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"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
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"events": [
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"introduced": "0"
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{
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"package": {
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"purl": "pkg:deb/debian/jackson-databind?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-12086.json"
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"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
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],
"package": {
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"purl": "pkg:deb/debian/jackson-databind?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-12086.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
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},
{
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{
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],
"package": {
"name": "jackson-databind",
"purl": "pkg:deb/debian/jackson-databind?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-12086.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-09T09:47:23.122508254Z",
"provider": "osv",
"upstream": [
"CVE-2019-12086"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2019-12086"
]
},
"related_cves": [
{
"value": "CVE-2019-12086",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 111428,
"published_at": "2019-05-17T17:29:00.483+00:00"
}