CVEvulnerability
CVE-2026-47069
2.1 LOW
Official page ↗
- Status
- Analyzed
- Published
- 2026-05-25
- Last modified
- 2026-07-24
- Assigner
- 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
- CVSS 4.0 (6b3ad84c-e1a6-4bf7-a703-f496b71e49db)
- 2.1 LOW — 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/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
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weaknesses
- CWE-93
Description
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in benoitc hackney allows HTTP Response Splitting. The hackney_cookie:setcookie/3 function in src/hackney_cookie.erl validates the Name and Value arguments against CRLF and control characters, but concatenates the domain and path options verbatim into the output iolist with no equivalent check. An attacker who controls either option — for example by supplying a Host header value forwarded as the cookie domain, or a request path forwarded as the cookie path — can inject a literal CRLF sequence and arbitrary additional Set-Cookie headers into the HTTP response.
This issue affects hackney: from 0.9.0 before 4.0.1.
Affected configurations
• benoitc hackney (>= 0.9.0 < 4.0.1)
Related
Weakness · CWE (1)
- CWE-93 Improper Neutralization of CRLF Sequences weakness
References
- https://cna.erlef.org/cves/CVE-2026-47069.html Patch, Third Party Advisory
- https://github.com/benoitc/hackney/commit/8e02b99c28aea1b3fa2ddc0e66f51fe5bb0ac540 Patch
- https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2 Exploit, Patch, Vendor Advisory
- https://osv.dev/vulnerability/EEF-CVE-2026-47069 Patch, Third Party Advisory
- https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2 Exploit, Patch, Vendor Advisory