{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.12.0"
              },
              {
                "fixed": "2.12.5"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "f23d19f035a36430f898c35fcd2168784c427a59"
            },
            {
              "fixed": "a01100b9405fa62009bc1674d5b2bd2acc27e07e"
            },
            {
              "fixed": "9998b7e284e02fdd4645dd6231760038e63b584d"
            }
          ],
          "repo": "https://github.com/oban-bg/oban_web",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-6xh2-93p9-vqh4"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48593.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "a97c7960bb389b05aaab4cf8042985f02ceddc24"
          },
          {
            "fixed": "9998b7e284e02fdd4645dd6231760038e63b584d"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Uncontrolled Resource Consumption vulnerability in oban-bg oban_web ('Elixir.Oban.Web.CronExpr' modules) allows memory exhaustion via unbounded cron range expansion.\n\nAn attacker with access to schedule cron jobs can submit a malicious cron expression such as \"0 0 1-100000000 * *\". When a user with dashboard access views the cron job list, 'Elixir.Oban.Web.CronExpr':describe/1 is called to render the expression. parse_range/1 parses both range endpoints via Integer.parse/1 with no bounds check, and the downstream helpers expand_dom_parts/1 and expand_dow_parts/1 materialise the range eagerly via Enum.to_list/1, causing allocation of ~2.4 GB and stalling or crashing the BEAM node. A sibling helper extract_dom_values already validates range bounds, but the expansion helpers do not.\n\nThis issue affects oban_web: from 2.12.0 before 2.12.5.",
  "id": "CVE-2026-48593",
  "modified": "2026-07-08T05:39:25.646863532Z",
  "published": "2026-05-26T19:46:43.980Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-48593.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-48593"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48593.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/oban-bg/oban_web/security/advisories/GHSA-6xh2-93p9-vqh4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48593"
    },
    {
      "type": "FIX",
      "url": "https://github.com/oban-bg/oban_web/commit/9998b7e284e02fdd4645dd6231760038e63b584d"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/oban-bg/oban_web.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Unbounded range expansion in cron describe causes memory exhaustion in oban_web"
}