CVE-2026-48861
- Source
- https://cve.org/CVERecord?id=CVE-2026-48861
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-48861.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-48861
- Aliases
-
- EEF-CVE-2026-48861
- GHSA-2pg6-44cx-c49v
- Published
- 2026-06-02T14:15:09.015Z
- Modified
- 2026-06-18T03:55:04.895680341Z
- Severity
-
- 2.1 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N CVSS Calculator
- Summary
- CRLF injection in HTTP/1 request line via unvalidated method in Mint
- Details
-
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 encoderequestline/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 validaterequesttarget/2, which rejects CRLF and other control characters in the target by default and closes the path/query vector unless the caller opts out via skiptargetvalidation: true. The method field remains unvalidated, so the method-based injection is exploitable under the default Mint configuration on all versions.
This issue affects mint: from 0.1.0 before 1.9.0.
- Database specific
{ "cna_assigner": "EEF", "unresolved_ranges": [ { "source": "AFFECTED_FIELD", "extracted_events": [ { "introduced": "8db1acff30b6a9433762c18b1e1f891b8c1f74f7" }, { "fixed": "fad091454cbb7449b19edb8e1fee12ca7cf28c3a" } ] } ], "cwe_ids": [ "CWE-93" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48861.json" }- References
-
- https://cna.erlef.org/cves/CVE-2026-48861.html
- https://github.com
- https://osv.dev/vulnerability/EEF-CVE-2026-48861
- https://repo.hex.pm
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48861.json
- https://github.com/elixir-mint/mint/security/advisories/GHSA-2pg6-44cx-c49v
- https://nvd.nist.gov/vuln/detail/CVE-2026-48861
- https://github.com/elixir-mint/mint/commit/fad091454cbb7449b19edb8e1fee12ca7cf28c3a
- https://github.com/elixir-mint/mint
- https://github.com/elixir-mint/mint.git