Atom table exhaustion via untrusted URL scheme in Tesla.Adapter.Mint_CVE-2026-48597

{
    "lastseen": "",
    "description": "Allocation of Resources Without Limits or Throttling vulnerability in elixir-tesla tesla allows denial of service via atom table exhaustion in Tesla.Adapter.Mint.\n\nTesla.Adapter.Mint.open_conn/2 converts the URL scheme of every outgoing request to a BEAM atom via String.to_atom(uri.scheme) with no allow-list validation. BEAM atoms are never garbage-collected and the atom table is bounded (approximately 1,048,576 entries by default). An attacker who can influence the URL of a Tesla request \u2014 either via an application-level URL-forwarding feature (webhook, proxy, importer) or via a Location header returned by a server when Tesla.Middleware.FollowRedirects is in the pipeline \u2014 can mint one fresh permanent atom per request by varying the scheme string. After enough requests the atom table fills and the VM crashes, taking down the entire application.\n\nThis issue affects tesla: from 1.3.0 before 1.18.3.",
    "published": "2026-06-02T19:08:40.203Z",
    "modified": "2026-06-02T19:12:23.287Z",
    "type": "cve",
    "title": "Atom table exhaustion via untrusted URL scheme in Tesla.Adapter.Mint",
    "source": "EEF",
    "references": "https://github.com/elixir-tesla/tesla/security/advisories/GHSA-h74c-q9j7-mpcm\nhttps://cna.erlef.org/cves/CVE-2026-48597.html\nhttps://osv.dev/vulnerability/EEF-CVE-2026-48597\nhttps://github.com/elixir-tesla/tesla/commit/4699c3cb3e2fd6078f99f45f11cf7466aeedbf0e",
    "id": "CVE-2026-48597",
    "bulletinFamily": "",
    "cwe": [
        "CWE-770"
    ],
    "cvelist": null,
    "sourceData": "elixir-tesla tesla 1.3.0\nelixir-tesla tesla ccd0823d4ba37581a37d8f6108f9a81b263237ef",
    "sourceHref": "",
    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "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",
        "version": "4.0"
    },
    "cvss2": [],
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "tesla",
    "version": "1.3.0",
    "vendor": "elixir-tesla",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}