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CVE-2026-48861
UNKNOWN · CVSS n/a
EPSS exploitation probability: 0%
Published 2026-06-02T16:16:44.470 · Last modified 2026-06-17T10:55:19.237

Summary

Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in elixir-mint Mint allows HTTP Request Splitting and HTTP Request Smuggling. In lib/mint/http1/request.ex, the encode_request_line/2 function splices the caller-supplied method and target arguments directly into the HTTP/1 request line without any character validation: [method, ?\s, target, " HTTP/1.1\r\n"]. An application that forwards attacker-controlled input as the HTTP method or target to Mint.HTTP.request/5 is therefore exposed to request-line CRLF injection: the attacker can terminate the request line early, inject arbitrary headers, and smuggle an entirely separate pipelined HTTP request onto the same TCP connection. Mint 1.7.0 introduced validate_request_target/2, which rejects CRLF and other control cha

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.