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CVE-2026-48596— CRLF injection in Tesla.Multipart.add_content_type_param/2 allows HTTP header injection

AI Predicted 8.6 Difficulty: Easy

Possible ATT&CK Techniques 1AI

T1105 · Ingress Tool Transfer

Affected Version Matrix 2

VendorProductVersion RangeStatus
elixir-teslatesla0.8.0< 1.18.3affected
6ebfdb9abe9c6f119408045b933d82462decd351< 23601edac5d22ba9407b427967b5bdbda201aec2affected
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I. Basic Information for CVE-2026-48596

Vulnerability Information
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Vulnerability Title
CRLF injection in Tesla.Multipart.add_content_type_param/2 allows HTTP header injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') vulnerability in elixir-tesla tesla allows HTTP header injection via Tesla.Multipart.add_content_type_param/2. Tesla.Multipart.add_content_type_param/2 appends caller-supplied strings to the multipart content_type_params list without validating for CR (\r) or LF (\n) characters. Tesla.Multipart.headers/1 then joins these params verbatim with "; " to construct the outgoing Content-Type header value. A param containing \r\n splits the header line, allowing arbitrary headers to be injected into the outbound HTTP request. Any application that forwards untrusted input (such as a user-supplied charset or parameter string) into add_content_type_param/2 is affected. This issue affects tesla: from 0.8.0 before 1.18.3.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
HTTP头部中CRLF序列转义处理不恰当(HTTP响应分割)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
elixir-teslatesla 0.8.0 ~ 1.18.3 cpe:2.3:a:elixir-tesla:tesla:*:*:*:*:*:*:*:*
elixir-teslatesla 6ebfdb9abe9c6f119408045b933d82462decd351 ~ 23601edac5d22ba9407b427967b5bdbda201aec2 cpe:2.3:a:elixir-tesla:tesla:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-48596

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III. Intelligence Information for CVE-2026-48596

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Patches & Fixes for CVE-2026-48596 (1)

Vendor Advisories for CVE-2026-48596 (3)

Same Patch Batch · elixir-tesla · 2026-06-02 · 5 CVEs total

CVE-2026-48598CRLF injection in Tesla.Multipart disposition parameters allows multipart part header inje
CVE-2026-48594Decompression bomb in Tesla.Middleware.DecompressResponse and Tesla.Middleware.Compression
CVE-2026-48595Authorization header leaks to third-party origin on cross-origin redirect in Tesla.Middlew
CVE-2026-48597Atom table exhaustion via untrusted URL scheme in Tesla.Adapter.Mint

IV. Related Vulnerabilities

Same product: tesla
Same vendor: elixir-tesla
Same weakness: CWE-113

V. Comments for CVE-2026-48596

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