Medium
Security advisory
A vulnerability exists in certain .Net Framework API's and Visual Studio in the way they parse URL's, aka '.NET Framework and Visual Studio Spoofing Vulnerability'.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-0657
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:24 UTC · Revision 1
Source evidence
A vulnerability exists in certain .Net Framework API's and Visual Studio in the way they parse URL's, aka '.NET Framework and Visual Studio Spoofing Vulnerability'.
osv:CVE-2019-0657
Complete source record
{
"id": "a0db4546e1d0b43e6bea29d4433460c15cb499b8b1002bbcaf246cb7051e0e1b",
"url": "https://osv.dev/vulnerability/CVE-2019-0657",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-0657",
"summary": "A vulnerability exists in certain .Net Framework API's and Visual Studio in the way they parse URL's, aka '.NET Framework and Visual Studio Spoofing Vulnerability'.",
"evidence": "osv:CVE-2019-0657",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2019-0657",
"aliases": [
"CVE-2019-0657",
"GHSA-x5qj-9vmx-7g6g"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/dotnet/core",
"type": "GIT",
"events": [
{
"introduced": "6251598c0087239b392cccda68515cd8c71d7f3d"
},
{
"last_affected": "babd93cbba8eef59a323d66d2f9b63131b81408b"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:microsoft:.net_core:1.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0"
},
{
"last_affected": "1.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:microsoft:.net_core:2.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.1"
},
{
"last_affected": "2.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:microsoft:.net_core:2.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.2"
},
{
"last_affected": "2.2"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"1.0",
"2.1",
"2.2",
"v2.2.0",
"v2.1.6",
"v2.2.0-preview3",
"v1.1.10",
"v1.0.13",
"v2.1.5",
"v2.1.4",
"v2.2.0-preview1",
"v2.1.3",
"v2.1.2",
"v2.0.9",
"v1.1.9",
"v1.0.12",
"v2.1.1",
"v2.1.0",
"v2.0.7-2",
"v2.1-rc1",
"v2.0.7",
"v1.1.8",
"v1.1.7",
"v1.0.11",
"v2.1-preview2",
"v2.0.6",
"v1.0.10",
"v2.1-preview1",
"v1.1.6",
"v1.0.9",
"v2.0.5",
"v2.0.4",
"v2.0.3",
"v1.1.5",
"v1.0.8",
"v1.1.4",
"v1.0.7",
"v2.0.0",
"v2.0.0-preview2",
"v2.0.0-preview1",
"v1.1.2",
"v1.0.5",
"v1.1.1",
"v1.0.4",
"v1.0.3",
"v1.1",
"v1.1.0-preview1",
"v1.0.2",
"v1.0.1",
"v1.1.0",
"v1.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-0657.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/powershell/powershell",
"type": "GIT",
"events": [
{
"introduced": "2f818615bed15141c062dd185f659ed110d9c6ba"
},
{
"last_affected": "855d2b9d75bd5b92e1929676d3ec6e13ef3e6838"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:microsoft:powershell_core:6.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "6.0"
},
{
"last_affected": "6.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:microsoft:powershell_core:6.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "6.1"
},
{
"last_affected": "6.1"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"6.0",
"6.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-0657.json"
}
}
],
"modified": "2026-10-24T10:30:28.434670690Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHSA-2019:0349",
"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0657"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:3.0:sp2:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*"
],
"vendor_product": "microsoft:.net_framework",
"extracted_events": [
{
"range": [
{
"introduced": "2.0-sp2"
},
{
"last_affected": "2.0-sp2"
},
{
"introduced": "3.0-sp2"
},
{
"last_affected": "3.0-sp2"
},
{
"introduced": "3.5"
},
{
"last_affected": "3.5"
},
{
"introduced": "3.5.1"
},
{
"last_affected": "3.5.1"
},
{
"introduced": "4.5.2"
},
{
"last_affected": "4.5.2"
},
{
"introduced": "4.6"
},
{
"last_affected": "4.6"
},
{
"introduced": "4.6.2"
},
{
"last_affected": "4.6.2"
},
{
"introduced": "4.7"
},
{
"last_affected": "4.7"
},
{
"introduced": "4.7.1"
},
{
"last_affected": "4.7.1"
},
{
"introduced": "4.7.2"
},
{
"last_affected": "4.7.2"
},
{
"introduced": "4.6"
},
{
"last_affected": "4.6"
},
{
"introduced": "4.6.1"
},
{
"last_affected": "4.6.1"
},
{
"introduced": "4.6.2"
},
{
"last_affected": "4.6.2"
},
{
"introduced": "4.6"
},
{
"last_affected": "4.6"
},
{
"introduced": "4.6.1"
},
{
"last_affected": "4.6.1"
},
{
"introduced": "4.6.2"
},
{
"last_affected": "4.6.2"
},
{
"introduced": "4.7"
},
{
"last_affected": "4.7"
},
{
"introduced": "4.7.1"
},
{
"last_affected": "4.7.1"
},
{
"introduced": "4.7.2"
},
{
"last_affected": "4.7.2"
},
{
"introduced": "4.7.1"
},
{
"last_affected": "4.7.1"
},
{
"introduced": "4.7.2"
},
{
"last_affected": "4.7.2"
},
{
"introduced": "4.7.2"
},
{
"last_affected": "4.7.2"
},
{
"introduced": "4.7"
},
{
"last_affected": "4.7"
},
{
"introduced": "4.7.1"
},
{
"last_affected": "4.7.1"
},
{
"introduced": "4.7.2"
},
{
"last_affected": "4.7.2"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:microsoft:visual_studio_2017:15.9:*:*:*:*:*:*:*"
],
"vendor_product": "microsoft:visual_studio_2017",
"extracted_events": [
{
"range": [
{
"introduced": "15.9"
},
{
"last_affected": "15.9"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-0657",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 432042,
"published_at": "2019-03-05T23:29:02.037+00:00"
}