CVE-2026-47069

Name: CVE-2026-47069
Creator: NVD / NIST
Published: 2026-05-25T15:16:21.87+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2.1/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2026-47069 is a low-severity vulnerability rated 2.1/10 on the CVSS scale. 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. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS 4.0

2.1/10

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

EPSS Probability

0.37%

29.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-93

Affected Software

Vendor	Product	Versions
Benoitc	Hackney	>= 0.9.0, < 4.0.1

References

https://cna.erlef.org/cves/CVE-2026-47069.htmlPatch, Third Party Advisory
https://github.com/benoitc/hackney/commit/8e02b99c28aea1b3fa2ddc0e66f51fe5bb0ac540Patch
https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2Exploit, Patch, Vendor Advisory
https://osv.dev/vulnerability/EEF-CVE-2026-47069Patch, Third Party Advisory
https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2Exploit, Patch, Vendor Advisory

Timeline

Published: May 25, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-47069?

How severe is CVE-2026-47069?

CVE-2026-47069 has a CVSS score of 2.1/10 (LOW severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2026-47069?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-47069?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST