High
Security advisory
SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries in a "merge" operation that occurs after crafted changes to FTS3 shadow tables, allowing remote attackers to execute arbitrary code by leveraging the ability to run arbitrary SQL statements (such as in certain WebSQL use cases). This is a different vulnerability than CVE-2018-20346.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-20506
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:37 UTC · Revision 1
Source evidence
SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries in a "merge" operation that occurs after crafted changes to FTS3 shadow tables, allowing remote attackers to execute arbitrary code by leveraging the ability to run arbitrary SQL statements (such as in certain WebSQL use cases). This is a different vulnerability than CVE-2018-20346.
osv:CVE-2018-20506
Complete source record
{
"id": "f3c03beda0a29d023f8eead885b4afa4681b77662bad0645eabeaeee3b72d516",
"url": "https://osv.dev/vulnerability/CVE-2018-20506",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-20506",
"summary": "SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries in a \"merge\" operation that occurs after crafted changes to FTS3 shadow tables, allowing remote attackers to execute arbitrary code by leveraging the ability to run arbitrary SQL statements (such as in certain WebSQL use cases). This is a different vulnerability than CVE-2018-20346.",
"evidence": "osv:CVE-2018-20506",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2018-20506",
"aliases": [
"CVE-2018-20506"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/sqlite/sqlite",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "ea6eb55ebe6d6e427f3dc908ecc7ced8529adf10"
}
],
"database_specific": {
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{
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"range": [
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},
{
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],
"source": "CPE_RANGE"
}
]
}
}
],
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-20506.json"
}
}
],
"modified": "2026-10-24T10:30:20.938644125Z",
"provider": "osv",
"references": [
"https://kc.mcafee.com/corporate/index?page=content&id=SB10365",
"https://lists.debian.org/debian-lts-announce/2020/08/msg00037.html",
"https://usn.ubuntu.com/4019-1/",
"https://usn.ubuntu.com/4019-2/",
"https://www.oracle.com/security-alerts/cpuapr2020.html",
"https://seclists.org/bugtraq/2019/Jan/28",
"https://seclists.org/bugtraq/2019/Jan/29",
"https://seclists.org/bugtraq/2019/Jan/31",
"https://seclists.org/bugtraq/2019/Jan/32",
"https://seclists.org/bugtraq/2019/Jan/33",
"https://seclists.org/bugtraq/2019/Jan/39",
"https://security.netapp.com/advisory/ntap-20190502-0004/",
"https://sqlite.org/src/info/940f2adc8541a838",
"https://support.apple.com/kb/HT209443",
"https://support.apple.com/kb/HT209446",
"https://support.apple.com/kb/HT209447",
"https://support.apple.com/kb/HT209448",
"https://support.apple.com/kb/HT209450",
"https://support.apple.com/kb/HT209451"
],
"provider_metadata": {
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{
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],
"vendor_product": "apple:icloud",
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{
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}
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}
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},
{
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],
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}
],
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}
]
},
{
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],
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}
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}
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{
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],
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}
],
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}
]
},
{
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],
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{
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{
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}
],
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}
]
},
{
"cpes": [
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],
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{
"range": [
{
"fixed": "5.1.3"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*"
],
"vendor_product": "opensuse:leap",
"extracted_events": [
{
"range": [
{
"introduced": "42.3"
},
{
"last_affected": "42.3"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2018-20506",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 430382,
"published_at": "2019-04-03T18:29:01.313+00:00"
}