usn-8420-1
Vulnerability from osv_ubuntu
Published
2026-06-11 06:57
Modified
2026-06-30 15:55
Summary
dotnet8, dotnet9, dotnet10 vulnerabilities
Details
It was discovered that .NET did not properly handle link resolution before file access. A local attacker could use this issue to perform unauthorized file tampering and write arbitrary files outside of the intended extraction directory. (CVE-2026-45491)
It was discovered that .NET did not properly handle deeply-nested MessagePack arrays. An attacker could use this to cause .NET to consume excessive resources, resulting in a denial of service. (CVE-2026-45591)
References
| URL | Type | |
|---|---|---|
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"details": "It was discovered that .NET did not properly handle link resolution before\nfile access. A local attacker could use this issue to perform unauthorized\nfile tampering and write arbitrary files outside of the intended extraction\ndirectory. (CVE-2026-45491)\n\nIt was discovered that .NET did not properly handle deeply-nested\nMessagePack arrays. An attacker could use this to cause .NET to consume\nexcessive resources, resulting in a denial of service. (CVE-2026-45591)",
"id": "USN-8420-1",
"modified": "2026-06-30T15:55:21Z",
"published": "2026-06-11T06:57:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8420-1"
},
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"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-45491"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-45591"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "dotnet8, dotnet9, dotnet10 vulnerabilities",
"upstream": [
"UBUNTU-CVE-2026-45491",
"UBUNTU-CVE-2026-45591"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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