{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.4.0"
              },
              {
                "fixed": "1.0.0"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "e45282526107417bd54f57bb8298b52a7c272ccb"
            },
            {
              "fixed": "8105f803030f7f5ae1d722251ee6ab2e36878830"
            },
            {
              "fixed": "272a97a5ea1b46af1819f14a831fcf35fc91f992"
            }
          ],
          "repo": "https://github.com/elixir-grpc/grpc",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-grp7-v8xh-rj7h"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-502",
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48853.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "25bcc569fe2cc4478531a6c546c923205fc751c9"
          },
          {
            "fixed": "272a97a5ea1b46af1819f14a831fcf35fc91f992"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Deserialization of Untrusted Data and Allocation of Resources Without Limits or Throttling vulnerabilities in elixir-grpc grpc allow unauthenticated attackers to crash the BEAM node via atom table exhaustion and, when a decoded term flows into a call site that invokes it, achieve remote code execution on the server.\n\n'Elixir.GRPC.Codec.Erlpack':decode/2 (lib/grpc/codec/erlpack.ex) calls :erlang.binary_to_term/1 on the raw gRPC message body without the :safe option, no size bound, and no type guard. Any unauthenticated peer that sends a request with Content-Type: application/grpc+erlpack can send a crafted payload that mints arbitrary new atoms (which are never garbage-collected, exhausting the bounded atom table and crashing the VM) or that encodes a fun term which, if applied anywhere downstream, executes attacker-controlled code inside the server process.\n\nThis issue affects grpc from 0.4.0 before 1.0.0.",
  "id": "CVE-2026-48853",
  "modified": "2026-07-08T05:36:27.893502022Z",
  "published": "2026-06-15T21:56:15.262Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-48853.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-48853"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48853.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/elixir-grpc/grpc/security/advisories/GHSA-grp7-v8xh-rj7h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48853"
    },
    {
      "type": "FIX",
      "url": "https://github.com/elixir-grpc/grpc/commit/272a97a5ea1b46af1819f14a831fcf35fc91f992"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/elixir-grpc/grpc"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Remote code execution and denial of service via unsafe Erlang term deserialization in elixir-grpc/grpc"
}