CRLF injection in Tesla.Multipart disposition parameters allows multipart part header injection_CVE-2026-48598

{
    "lastseen": "",
    "description": "Improper Encoding or Escaping of Output vulnerability in elixir-tesla tesla allows multipart part header injection via unescaped Content-Disposition parameter values.\n\nTesla.Multipart.part_headers_for_disposition/1 interpolates each disposition parameter as #{k}=\"#{v}\" with no validation of CR (\\r), LF (\\n), or double-quote characters. The values come verbatim from the caller via Tesla.Multipart.add_field/4 (the name parameter), Tesla.Multipart.add_file/3, and Tesla.Multipart.add_file_content/4 (both the filename parameter and other disposition opts). A \" in the value closes the quoted parameter early; a \\r\\n ends the Content-Disposition header line and starts a new part header (such as a forged Content-Type), or, after a second \\r\\n, ends the entire part header block and prepends bytes to the part body. The default-filename path in add_file/3 derives the filename via Path.basename/1, which does not strip CR or LF, so any application forwarding a partially-attacker-controlled file path inherits the same issue.\n\nThis issue affects tesla: from 0.8.0 before 1.18.3.",
    "published": "2026-06-02T19:08:19.921Z",
    "modified": "2026-06-02T19:12:18.502Z",
    "type": "cve",
    "title": "CRLF injection in Tesla.Multipart disposition parameters allows multipart part header injection",
    "source": "EEF",
    "references": "https://github.com/elixir-tesla/tesla/security/advisories/GHSA-28jh-g32x-v9v4\nhttps://cna.erlef.org/cves/CVE-2026-48598.html\nhttps://osv.dev/vulnerability/EEF-CVE-2026-48598\nhttps://github.com/elixir-tesla/tesla/commit/bb1a2c3da2775924d96e3db8e315dcc4d5d2246e",
    "id": "CVE-2026-48598",
    "bulletinFamily": "",
    "cwe": [
        "CWE-116"
    ],
    "cvelist": null,
    "sourceData": "elixir-tesla tesla 0.8.0\nelixir-tesla tesla 6ebfdb9abe9c6f119408045b933d82462decd351",
    "sourceHref": "",
    "cvss": {
        "score": 2.1,
        "severity": "LOW",
        "vector": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
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            "privilegesRequired": "",
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            "confidentialityImpact": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "tesla",
    "version": "0.8.0",
    "vendor": "elixir-tesla",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}