ghsa-rxmj-hg9v-vp3p

{
  "affected": [
    {
      "database_specific": {
        "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/06/GHSA-rxmj-hg9v-vp3p/GHSA-rxmj-hg9v-vp3p.json"
      },
      "package": {
        "ecosystem": "SwiftURL",
        "name": "github.com/grpc/grpc-swift",
        "purl": "pkg:swift/github.com/grpc/grpc-swift"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.0"
            }
          ],
          "type": "SEMVER"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-36155"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120",
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-06-09T19:32:11Z",
    "nvd_published_at": "2021-07-09T12:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nAffected gRPC Swift clients and servers are vulnerable to uncontrolled resource consumption attacks. Excessive memory may be allocated when parsing messages. This can lead to a denial of service.\n\n### Patches\n\nThe problem has been fixed in 1.2.0.\n\n### Workarounds\n\nNo workaround is available. Users must upgrade.",
  "id": "GHSA-rxmj-hg9v-vp3p",
  "modified": "2026-07-08T06:29:59.049314536Z",
  "published": "2023-06-09T19:32:11Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/grpc/grpc-swift/security/advisories/GHSA-rxmj-hg9v-vp3p"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-36155"
    },
    {
      "type": "WEB",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35303"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/grpc/grpc-swift"
    },
    {
      "type": "WEB",
      "url": "https://github.com/grpc/grpc-swift/releases/tag/1.2.0"
    }
  ],
  "schema_version": "1.9.0",
  "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": "Uncontrolled Resource Consumption in LengthPrefixedMessageReader"
}