CVE-2026-27959 Koa has Host Header Injection via `ctx.hostname`
| Reporter | Title | Published | Views | Family All 33 |
|---|---|---|---|---|
 | Security Bulletin: IBM App Connect Enterprise Certified Container DesignerAuthoring operands are vulnerable to loss of confidentiality (CVE-2026-27959) | 7 Apr 202616:13 | – | ibm |
 | CVE-2026-27959 | 26 Feb 202601:45 | – | attackerkb |
 | Node.js Koa Data Compromise | 9 Jul 202600:00 | – | bdu_fstec |
 | CVE-2026-27959 | 26 Feb 202604:24 | – | circl |
 | Koa input validation vulnerability | 26 Feb 202600:00 | – | cnnvd |
 | CVE-2026-27959 | 26 Feb 202601:45 | – | cve |
 | EUVD-2026-8816 | 26 Feb 202622:42 | – | euvd |
 | Koa has Host Header Injection via ctx.hostname | 26 Feb 202622:42 | – | github |
 | CVE-2026-27959-mini-lab | 31 Oct 202611:11 | – | kitploit |
 | CVE-2026-27959 | 26 Feb 202601:45 | – | mend |
10
[
{
"vendor": "koajs",
"product": "koa",
"versions": [
{
"version": ">= 3.0.0, < 3.1.2",
"status": "affected"
},
{
"version": "< 2.16.4",
"status": "affected"
}
]
}
]Data
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26 Feb 2026 01:45Current
CVSS 3.17.5 - 8.2
EPSS0.00391
SSVC