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            {
              "fixed": "4.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 3.20.1"
      },
      "package": {
        "ecosystem": "Go",
        "name": "helm.sh/helm/v3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.20.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-35206"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-10T15:33:09Z",
    "nvd_published_at": "2026-04-09T21:16:09Z",
    "severity": "MODERATE"
  },
  "details": "Helm is a package manager for Charts for Kubernetes. In Helm versions \u003c=3.20.1 and \u003c=4.1.3, a specially crafted Chart will cause `helm pull --untar  [chart URL | repo/chartname]` to write the Chart\u0027s contents to the immediate output directory (as defaulted to the current working directory; or as given by the `--destination` and `--untardir` flags), rather than the expected output directory suffixed by the chart\u0027s name.\n\n### Impact\n\nThe bug enables writing the Chart\u0027s contents (unpackaged/untar\u0027ed) to the output directory `\u003coutput dir\u003e/`, instead of the expected `\u003coutput dir\u003e/\u003cchart name\u003e/`, potentially overwriting the contents of the targeted directory.\n\nNote: a chart name containing POSIX dot-dot, or dot-dot and slashes (as if to refer to parent directories) do not resolve beyond the output directory as designed.\n\n### Patches\n\nThis issue has been resolved in Helm v3.20.2 and v4.1.3\n\nA Chart with an unexpected name (those specified to be \".\" or \"..\"), or a Chart name which results in a non-unique directory will be rejected.\n\n### Workarounds\n\nEnsure the the name of the Chart does not comprise/contain POSIX pathname special directory references ie. dot-dot (\"..\") or dot (\".\"). In addition, ensuring that the `pull --untar` flag (or equivalent SDK option) refers to a unique/empty output directory prevents chart extraction from inadvertently overwriting existing files within the specified directory.\n\n### Credits\n\nOleh Konko\n@1seal",
  "id": "GHSA-hr2v-4r36-88hr",
  "modified": "2026-04-10T15:33:09Z",
  "published": "2026-04-10T15:33:09Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/helm/helm/security/advisories/GHSA-hr2v-4r36-88hr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35206"
    },
    {
      "type": "WEB",
      "url": "https://github.com/helm/helm/commit/4e7994d4467182f535b6797c94b5b0e994a91436"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/helm/helm"
    },
    {
      "type": "WEB",
      "url": "https://github.com/helm/helm/releases/tag/v4.1.4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Helm Chart extraction output directory collapse via `Chart.yaml` name dot-segment"
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "google.golang.org/grpc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.79.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-33186"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-285"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-18T20:10:29Z",
    "nvd_published_at": "2026-03-20T23:16:45Z",
    "severity": "CRITICAL"
  },
  "details": "### Impact\n_What kind of vulnerability is it? Who is impacted?_\n\nIt is an **Authorization Bypass** resulting from **Improper Input Validation** of the HTTP/2 `:path` pseudo-header.\n\nThe gRPC-Go server was too lenient in its routing logic, accepting requests where the `:path` omitted the mandatory leading slash (e.g., `Service/Method` instead of `/Service/Method`). While the server successfully routed these requests to the correct handler, authorization interceptors (including the official `grpc/authz` package) evaluated the raw, non-canonical path string. Consequently, \"deny\" rules defined using canonical paths (starting with `/`) failed to match the incoming request, allowing it to bypass the policy if a fallback \"allow\" rule was present.\n\n**Who is impacted?**\nThis affects gRPC-Go servers that meet both of the following criteria:\n1. They use path-based authorization interceptors, such as the official RBAC implementation in `google.golang.org/grpc/authz` or custom interceptors relying on `info.FullMethod` or `grpc.Method(ctx)`.\n2. Their security policy contains specific \"deny\" rules for canonical paths but allows other requests by default (a fallback \"allow\" rule).\n\nThe vulnerability is exploitable by an attacker who can send raw HTTP/2 frames with malformed `:path` headers directly to the gRPC server.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\nYes, the issue has been patched. The fix ensures that any request with a `:path` that does not start with a leading slash is immediately rejected with a `codes.Unimplemented` error, preventing it from reaching authorization interceptors or handlers with a non-canonical path string.\n\nUsers should upgrade to the following versions (or newer):\n* **v1.79.3**\n* The latest **master** branch.\n\nIt is recommended that all users employing path-based authorization (especially `grpc/authz`) upgrade as soon as the patch is available in a tagged release.\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nWhile upgrading is the most secure and recommended path, users can mitigate the vulnerability using one of the following methods:\n\n#### 1. Use a Validating Interceptor (Recommended Mitigation)\nAdd an \"outermost\" interceptor to your server that validates the path before any other authorization logic runs:\n\n```go\nfunc pathValidationInterceptor(ctx context.Context, req any, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (any, error) {\n    if info.FullMethod == \"\" || info.FullMethod[0] != \u0027/\u0027 {\n        return nil, status.Errorf(codes.Unimplemented, \"malformed method name\")\n    }   \n    return handler(ctx, req)\n}\n\n// Ensure this is the FIRST interceptor in your chain\ns := grpc.NewServer(\n    grpc.ChainUnaryInterceptor(pathValidationInterceptor, authzInterceptor),\n)\n```\n\n#### 2. Infrastructure-Level Normalization\nIf your gRPC server is behind a reverse proxy or load balancer (such as Envoy, NGINX, or an L7 Cloud Load Balancer), ensure it is configured to enforce strict HTTP/2 compliance for pseudo-headers and reject or normalize requests where the `:path` header does not start with a leading slash.\n\n#### 3. Policy Hardening\nSwitch to a \"default deny\" posture in your authorization policies (explicitly listing all allowed paths and denying everything else) to reduce the risk of bypasses via malformed inputs.",
  "id": "GHSA-p77j-4mvh-x3m3",
  "modified": "2026-03-25T18:12:09Z",
  "published": "2026-03-18T20:10:29Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/grpc/grpc-go/security/advisories/GHSA-p77j-4mvh-x3m3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33186"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/grpc/grpc-go"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "gRPC-Go has an authorization bypass via missing leading slash in :path"
}

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.5.0"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/moby/spdystream"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.5.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-35469"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-16T20:44:01Z",
    "nvd_published_at": "2026-04-16T22:16:37Z",
    "severity": "HIGH"
  },
  "details": "The SPDY/3 frame parser in spdystream does not validate\nattacker-controlled counts and lengths before allocating memory. A\nremote peer that can send SPDY frames to a service using spdystream can\ncause the process to allocate gigabytes of memory with a small number of\nmalformed control frames, leading to an out-of-memory crash.\n\u00a0\nThree allocation paths in the receive side are affected:\n1. **SETTINGS entry count** -- The SETTINGS frame reader reads a 32-bit\n`numSettings` from the payload and allocates a slice of that size\nwithout checking it against the declared frame length. An attacker\ncan set `numSettings` to a value far exceeding the actual payload,\ntriggering a large allocation before any setting data is read.\n\u00a0\n2. **Header count** -- `parseHeaderValueBlock` reads a 32-bit\n`numHeaders` from the decompressed header block and allocates an\n`http.Header` map of that size with no upper bound.\n\u00a0\n3. **Header field size** -- Individual header name and value lengths are\nread as 32-bit integers and used directly as allocation sizes with\nno validation.\n\u00a0\nBecause SPDY header blocks are zlib-compressed, a small on-the-wire\npayload can decompress into attacker-controlled bytes that the parser\ninterprets as 32-bit counts and lengths. A single crafted frame is\nenough to exhaust process memory.\n## Impact\n\u00a0Any program that accepts SPDY connections using spdystream -- directly\nor through a dependent library -- is affected. A remote peer that can\nsend SPDY frames to the service can crash the process with a single\ncrafted SPDY control frame, causing denial of service.\n## Affected versions\n\u00a0`github.com/moby/spdystream` \u003c= v0.5.0\n## Fix\n\u00a0v0.5.1 addresses the receive-side allocation bugs and adds related\nhardening:\n\u00a0\n**Core fixes:**\n\u00a0\n- **SETTINGS entry-count validation** -- The SETTINGS frame reader now\nchecks that `numSettings` is consistent with the declared frame\nlength (`numSettings \u003c= (length-4)/8`) before allocating.\n\u00a0\n- **Header count limit** -- `parseHeaderValueBlock` enforces a maximum\nnumber of headers per frame (default: 1000).\n\u00a0\n- **Header field size limit** -- Individual header name and value\nlengths are checked against a per-field size limit (default: 1 MiB)\nbefore allocation.\n\u00a0\n- **Connection closure on protocol error** -- The connection read loop\nnow closes the underlying `net.Conn` when it encounters an\n`InvalidControlFrame` error, preventing further exploitation on the\nsame connection.\n\u00a0\n**Additional hardening:**\n\u00a0\n- **Write-side bounds checks** -- All frame write methods now verify\nthat payloads fit within the 24-bit length field, preventing the\nlibrary from producing invalid frames.\n\u00a0\n**Configurable limits:**\n\u00a0\n- Callers can adjust the defaults using `NewConnectionWithOptions` or\nthe lower-level `spdy.NewFramerWithOptions` with functional options:\n`WithMaxControlFramePayloadSize`, `WithMaxHeaderFieldSize`, and\n`WithMaxHeaderCount`.\n\u00a0",
  "id": "GHSA-pc3f-x583-g7j2",
  "modified": "2026-06-08T23:36:28Z",
  "published": "2026-04-16T20:44:01Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/moby/spdystream/security/advisories/GHSA-pc3f-x583-g7j2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35469"
    },
    {
      "type": "WEB",
      "url": "https://github.com/moby/spdystream/commit/ef6121f62c730110bf5ae604a865a8613bfb787f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/moby/spdystream"
    },
    {
      "type": "WEB",
      "url": "https://github.com/moby/spdystream/releases/tag/v0.5.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "SpdyStream: DOS on CRI"
}