idunno.Bluesky, idunno.AtProto and idunno.AtProto.OAuthCallback Denial of Service Vulnerability

{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "idunno.AtProto"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "idunno.AtProto.OAuthCallback"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "idunno.Bluesky"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-129"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-13T20:50:22Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "# idunno.Bluesky, idunno.AtProto and idunno.AtProto.OAuthCallback Denial of Service Vulnerability\n\n## Impact\n\nThe `Microsoft.Bcl.Memory` package, a transitive dependency of `idunno.AtProto` and `idunno.AtProto.OAuthCallback` had a Denial of Service security vulnerability, [CVE-2026-26127](https://github.com/dotnet/announcements/issues/384)\n\n## Patches\n\nv1.7.0 updates the dependencies on `Duende.IdentityModel.OidcClient` and `Duende.IdentityModel.OidcClient.Extensions` which, in turn, updates their dependency on `Microsoft.Bcl.Memory` to 10.0.4, resolving the vulnerability.\n\n## Workarounds\n\nNo workarounds exist for this vulnerability.\n\n## How to fix the issue\n\nTo update your dependencies on `idunno.Bluesky`, `idunno.AtProto` and `idunno.AtProto.OAuthCallback`, \n\n### Using the .NET CLI (Command Line Interface):\n\n* Open a terminal or command prompt in your project\u0027s directory.\n* To update a specific package to its latest version, use the following add package command:\n   \n  * If you are using `idunno.Bluesky`\n    `dotnet package update idunno.Bluesky`\n\n  * If you are using `idunno.AtProto` as a direct dependency\n    `dotnet package update idunno.AtProto`\n\n  * If you are using `idunno.AtProto.OAuthCallback` as a direct dependency\n    `dotnet package update idunno.AtProto.OAuthCallback`\n\n### Using the NuGet Package Manager Console in Visual Studio:\n\n* Open your project in Visual Studio.\n* Navigate to \"Tools \u003e NuGet Package Manager \u003e Package Manager Console\".\n* To update a specific package to its latest version, use the following Update-Package command:\n\n  * If you are using `idunno.Bluesky`\n    `Update-Package -Id idunno.Bluesky`\n\n  * If you are using `idunno.AtProto` as a direct dependency\n    `Update-Package -Id idunno.AtProto`\n\n  * If you are using `idunno.AtProto.OAuthCallback` as a direct dependency\n    `Update-Package -Id idunno.AtProto.OAuthCallback`\n\n### NuGet Package Manager UI in Visual Studio:\n\n* Open your project in Visual Studio.\n* Right-click on your project in Solution Explorer and select \"Manage NuGet Packages...\" or navigate to \"Project \u003e Manage NuGet Packages\".\n* In the NuGet Package Manager window, select the \"Updates\" tab. This tab lists packages with available updates from your configured package sources.\n* Select the package(s) you wish to update. You can choose a specific version from the dropdown or update to the latest available version.\n* Click the \"Update\" button.\n\n## References\n\n*  [Microsoft Security Advisory CVE-2026-26127 \u2013 .NET Denial of Service Vulnerability](https://github.com/dotnet/announcements/issues/384)\n*  [CVE-2026-26127](https://www.cve.org/CVERecord?id=CVE-2026-26127)",
  "id": "GHSA-8fh9-c4jq-94h4",
  "modified": "2026-03-13T20:50:22Z",
  "published": "2026-03-13T20:50:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/blowdart/idunno.Bluesky/security/advisories/GHSA-8fh9-c4jq-94h4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dotnet/announcements/issues/384"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/blowdart/idunno.Bluesky"
    },
    {
      "type": "WEB",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-26127"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "idunno.Bluesky, idunno.AtProto and idunno.AtProto.OAuthCallback Denial of Service Vulnerability"
}