usn-8553-1
Vulnerability from osv_ubuntu
Published
2026-07-15 17:13
Modified
2026-07-27 12:59
Summary
dotnet8, dotnet10 vulnerabilities
Details

Artur Stetsko discovered that the .NET did not properly validate authentication data. An attacker could possibly use this issue to elevate privileges. (CVE-2026-47300)

Levi Broderick discovered that .NET did not properly handle XML encryption during parsing. An attacker could possibly use this issue to consume excessive resources, resulting in a denial of service. (CVE-2026-47302)

Pham Quang Minh discovered that .NET did not properly parse authentication data. An attacker could possibly use this issue to bypass authentication and elevate privileges. (CVE-2026-47303)

Levi Broderick discovered that .NET did not properly verify cryptographic signatures during XML encryption. An attacker could possibly use this issue to bypass security features over a network and access encrypted data. (CVE-2026-47304)

It was discovered that .NET did not properly validate input during TLS handshakes. An attacker could possibly use this issue to cause .NET to crash, resulting in a denial of service. (CVE-2026-50524)

Levi Broderick discovered that .NET did not properly handle resource allocation during XML encryption. An attacker could possibly use this issue to consume excessive resources, resulting in a denial of service. (CVE-2026-50525)

Siwei Li discovered that .NET did not properly handle link resolution before file access during the container image build process. A local attacker could possibly use this issue to inject resources that could be incorporated into container images built by other users on the same machine. (CVE-2026-50526)

Levi Broderick discovered that .NET did not properly handle memory while performing XML encryption. An attacker could possibly use this issue to cause .NET to crash, resulting in a denial of service. (CVE-2026-50527)

Henrique Pereira discovered that .NET did not properly handle authorization checks during TLS/SSL connections. An attacker could possibly use this issue to bypass authorization checks during secure communications. (CVE-2026-50528)

It was discovered that .NET did not properly handle resource allocation during XML encryption. An attacker could possibly use this issue to consume excessive resources, resulting in a denial of service. (CVE-2026-50648)

Miha Zupan discovered that .NET did not properly limit resource allocation when handling HTTP/2 requests. An attacker could possibly use this issue to consume excessive resources, resulting in a denial of service. (CVE-2026-50651)

It was discovered that the .NET SMTP client did not properly handle the encoding or escaping of output. An attacker could possibly use this issue to spoof messages during message routing. (CVE-2026-50659)

It was discovered that .NET did not properly validate resource types when parsing X.509 certificates. An attacker could possibly use this issue to cause .NET to crash, resulting in a denial of service. (CVE-2026-57108)

References
To clipboard 

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  "affected": [
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              "id": "CVE-2026-50526",
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              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-50526",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
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                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
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              "id": "CVE-2026-50527",
              "severity": [
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                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
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            {
              "id": "CVE-2026-50528",
              "severity": [
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                  "type": "CVSS_V3"
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                }
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                  "type": "CVSS_V3"
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              "severity": [
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                  "type": "CVSS_V3"
                },
                {
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                }
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            },
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              "severity": [
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                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-50524",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-50525",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-50526",
              "severity": [
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                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
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                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-50527",
              "severity": [
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                  "type": "CVSS_V3"
                },
                {
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                  "type": "Ubuntu"
                }
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            {
              "id": "CVE-2026-50528",
              "severity": [
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                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
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              "id": "CVE-2026-50648",
              "severity": [
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                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
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        }
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  ],
  "aliases": [],
  "details": "Artur Stetsko discovered that the .NET did not properly validate\nauthentication data. An attacker could possibly use this issue to elevate\nprivileges. (CVE-2026-47300)\n\nLevi Broderick discovered that .NET did not properly handle XML encryption\nduring parsing. An attacker could possibly use this issue to consume\nexcessive resources, resulting in a denial of service. (CVE-2026-47302)\n\nPham Quang Minh discovered that .NET did not properly parse\nauthentication data. An attacker could possibly use this issue to bypass\nauthentication and elevate privileges. (CVE-2026-47303)\n\nLevi Broderick discovered that .NET did not properly verify cryptographic\nsignatures during XML encryption. An attacker could possibly use this issue\nto bypass security features over a network and access encrypted data.\n(CVE-2026-47304)\n\nIt was discovered that .NET did not properly validate input during TLS\nhandshakes. An attacker could possibly use this issue to cause .NET to\ncrash, resulting in a denial of service. (CVE-2026-50524)\n\nLevi Broderick discovered that .NET did not properly handle resource\nallocation during XML encryption. An attacker could possibly use this issue\nto consume excessive resources, resulting in a denial of service.\n(CVE-2026-50525)\n\nSiwei Li discovered that .NET did not properly handle link resolution\nbefore file access during the container image build process. A local\nattacker could possibly use this issue to inject resources that could be\nincorporated into container images built by other users on the same\nmachine. (CVE-2026-50526)\n\nLevi Broderick discovered that .NET did not properly handle memory while\nperforming XML encryption. An attacker could possibly use this issue to\ncause .NET to crash, resulting in a denial of service. (CVE-2026-50527)\n\nHenrique Pereira discovered that .NET did not properly handle\nauthorization checks during TLS/SSL connections. An attacker could\npossibly use this issue to bypass authorization checks during secure\ncommunications. (CVE-2026-50528)\n\nIt was discovered that .NET did not properly handle resource allocation\nduring XML encryption. An attacker could possibly use this issue to\nconsume excessive resources, resulting in a denial of service.\n(CVE-2026-50648)\n\nMiha Zupan discovered that .NET did not properly limit resource\nallocation when handling HTTP/2 requests. An attacker could possibly use\nthis issue to consume excessive resources, resulting in a denial of\nservice. (CVE-2026-50651)\n\nIt was discovered that the .NET SMTP client did not properly handle the\nencoding or escaping of output. An attacker could possibly use this issue\nto spoof messages during message routing. (CVE-2026-50659)\n\nIt was discovered that .NET did not properly validate resource types when\nparsing X.509 certificates. An attacker could possibly use this issue to\ncause .NET to crash, resulting in a denial of service. (CVE-2026-57108)",
  "id": "USN-8553-1",
  "modified": "2026-07-27T12:59:47Z",
  "published": "2026-07-15T17:13:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8553-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-47300"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-47302"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-47303"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-47304"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-50524"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-50525"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-50526"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-50527"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-50528"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-50648"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-50651"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-50659"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-57108"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "dotnet8, dotnet10 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-47300",
    "UBUNTU-CVE-2026-47302",
    "UBUNTU-CVE-2026-47303",
    "UBUNTU-CVE-2026-47304",
    "UBUNTU-CVE-2026-50524",
    "UBUNTU-CVE-2026-50525",
    "UBUNTU-CVE-2026-50526",
    "UBUNTU-CVE-2026-50527",
    "UBUNTU-CVE-2026-50528",
    "UBUNTU-CVE-2026-50648",
    "UBUNTU-CVE-2026-50651",
    "UBUNTU-CVE-2026-50659",
    "UBUNTU-CVE-2026-57108"
  ]
}



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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.