npm/fast-uri CVE-2026-16221: high 7.5, EPSS 0.25%
fast-uri vulnerable to host confusion via literal backslash authority delimiter
Action: Upgrade fast-uri to 2.4.3 or later.
npm i fast-uri@2.4.3npm i fast-uri@3.1.4npm i fast-uri@4.1.1Affected
| introduced | fixed | last affected |
|---|---|---|
| 2.3.1 | 2.4.3 | - |
| 3.0.0 | 3.1.4 | - |
| 4.0.0 | 4.1.1 | - |
Fixed versions
| 2.4.3 | 3.1.4 | 4.1.1 |
Sources
- osv: GHSA-v2hh-gcrm-f6hx
- https://github.com/fastify/fast-uri/security/advisories/GHSA-v2hh-gcrm-f6hx
- https://nvd.nist.gov/vuln/detail/CVE-2026-16221
- https://github.com/fastify/fast-uri/commit/0542a216860fd70c062a4730e620576f62ded057
- https://github.com/fastify/fast-uri/commit/2d50fbabc80e4d0884fe0f6a98fe118ce6faa353
- https://github.com/fastify/fast-uri/commit/9438266d6a7ded688c8bc7c4ba506da17f44a17b
- https://cna.openjsf.org/security-advisories.html
- https://github.com/fastify/fast-uri
- https://github.com/fastify/fast-uri/releases/tag/v2.4.3
- https://github.com/fastify/fast-uri/releases/tag/v3.1.4
- https://github.com/fastify/fast-uri/releases/tag/v4.1.1
CVE-2026-16221 · published · modified · JSON