{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.6.0"
              },
              {
                "fixed": "1.18.3"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "bd3ff7028470c88ec87cf1ea23d6128695809c0c"
            },
            {
              "fixed": "2eb7a78948f9c3b18509bf28bdc729e07f46e0dc"
            },
            {
              "fixed": "340f75b5d191dc747ef7ac6365bd002d1cd55a9d"
            }
          ],
          "repo": "https://github.com/elixir-tesla/tesla",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-mc85-72gr-vm9f"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-409"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48594.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "5bd90bb5cf0d15e375edc2a66fa322292940fce2"
          },
          {
            "fixed": "340f75b5d191dc747ef7ac6365bd002d1cd55a9d"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in elixir-tesla tesla allows a denial of service via decompression bomb in HTTP response bodies.\n\nWhen Tesla.Middleware.DecompressResponse or Tesla.Middleware.Compression is included in a Tesla middleware pipeline, HTTP response bodies are decompressed eagerly with no size limit. The decompress_body/2 function in lib/tesla/middleware/compression.ex passes the entire response body to :zlib.gunzip/1 or :zlib.unzip/1 without any cap on the output size. Additionally, compression_algorithms/1 splits the content-encoding header on commas and decompress_body/2 recurses once per token, applying a decompression pass on each iteration. A server advertising content-encoding: gzip, gzip, gzip, gzip causes four recursive decompression passes, yielding exponential amplification: each gzip layer can expand its input roughly 1000x, so a payload of a few hundred bytes on the wire inflates to gigabytes of BEAM heap, exhausting memory and crashing or freezing the calling process.\n\nThis issue affects tesla: from 0.6.0 before 1.18.3.",
  "id": "CVE-2026-48594",
  "modified": "2026-07-08T05:36:26.403983376Z",
  "published": "2026-06-02T19:08:49.596Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-48594.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-48594"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48594.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/elixir-tesla/tesla/security/advisories/GHSA-mc85-72gr-vm9f"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48594"
    },
    {
      "type": "FIX",
      "url": "https://github.com/elixir-tesla/tesla/commit/340f75b5d191dc747ef7ac6365bd002d1cd55a9d"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/elixir-tesla/tesla"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/elixir-tesla/tesla.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Decompression bomb in Tesla.Middleware.DecompressResponse and Tesla.Middleware.Compression"
}