CVE-2026-27959
1 advisory.
npm/koa CVE-2026-27959: high 7.5
Koa has Host Header Injection via ctx.hostname
Action: Upgrade koa to 2.16.4 or later.
npm i koa@3.1.2npm i koa@2.16.4Affected
| introduced | fixed | last affected |
|---|---|---|
| 3.0.0 | 3.1.2 | - |
| 0 | 2.16.4 | - |
Fixed versions
| 3.1.2 | 2.16.4 |
Sources
- osv: GHSA-7gcc-r8m5-44qm
- https://github.com/koajs/koa/security/advisories/GHSA-7gcc-r8m5-44qm
- https://nvd.nist.gov/vuln/detail/CVE-2026-27959
- https://github.com/koajs/koa/commit/55ab9bab044ead4e82c70a30a4f9dc0fc9c1b6df
- https://github.com/koajs/koa/commit/b76ddc01fdb703e51652b0fd131d16394cadcfeb
- https://github.com/koajs/koa
CVE-2026-27959 · published · modified · JSON