CVE-2026-47069 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-47069LOW

benoitc hackney — CRLF injection in cookie domain/path options in hackney

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   L   L   P   N   N   N   L   N    2.1   .0043   35.7     —

AFFECTED
  Product  Versions                                    Fixed
  hackney  0.9.0 –                                     —
  hackney  602d5c7f2ea4acbc83ed75230655d935a0750ebc –  —

TIMELINE
  May 18  Reserved by EEF
  May 25  EXPLOIT PUBLISHED — CVE-2026-47069 (benoitc hackney). Public exploit reference added.
  May 25  Published (CNA: EEF)

CWE-93 · CNA: EEF · CVSS v4.0 · 4 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 18, 2026	Reserved	Reserved by EEF
May 25, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-47069 (benoitc hackney). Public exploit reference added.
May 25, 2026	Published	Published (CNA: EEF)

Affected

Affected products and packages — 2 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
benoitc	hackney	—	0.9.0	—
benoitc	hackney	—	602d5c7f2ea4acbc83ed75230655d935a0750ebc	—

Weaknesses

CWE-93

References (4)

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]

Authoritative record: CVE-2026-47069 at cve.org

Vendors: benoitc

Weaknesses: CWE-93

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-47069 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.