7.5
CVE-2026-47075
- EPSS 0.42%
- Veröffentlicht 25.05.2026 14:00:45
- Zuletzt bearbeitet 28.05.2026 20:26:32
- Quelle 6b3ad84c-e1a6-4bf7-a703-f496b7
- CVE-Watchlists
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LoginCR/LF injection in query parameter in hackney
Improper Neutralization of CRLF Sequences vulnerability in benoitc hackney allows HTTP Request Splitting. hackney does not percent-encode carriage return (\r) or line feed (\n) characters in the URL query component before constructing the HTTP/1.1 request target. Characters outside the grammar defined in RFC 3986 Section 3.4 must be percent-encoded, but hackney_url:make_url/3 passes the query binary directly without validation or escaping. An attacker who can control all or part of a URL passed to hackney can inject raw CRLF sequences into the query string, which are then sent as HTTP line breaks in the request target. This enables injection of arbitrary HTTP headers or splitting of the HTTP request. This issue affects hackney: from 0 before 4.0.1.
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.42% | 0.336 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| nvd@nist.gov | 7.5 | 3.9 | 3.6 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
|
| 6b3ad84c-e1a6-4bf7-a703-f496b71e49db | 6.8 | 0 | 0 |
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
|
CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.
https://github.com/benoitc/hackney/security/advisories/GHSA-j9wq-vxxc-94wf
https://cna.erlef.org/cves/CVE-2026-47075.html
https://osv.dev/vulnerability/EEF-CVE-2026-47075
https://github.com/benoitc/hackney/commit/ca73dd0aba0ed557449c18288bf07241671a43c9