CVE-2021-22964 - CVE House
Back to Database
Status published High CVE-2021-22964

A redirect vulnerability in the `fastify-static` module version >= 4.2.4...

Vulnerability Description

A redirect vulnerability in the `fastify-static` module version >= 4.2.4 and < 4.4.1 allows remote attackers to redirect Mozilla Firefox users to arbitrary websites via a double slash `//` followed by a domain: `http://localhost:3000//a//youtube.com/%2e%2e%2f%2e%2e`.A DOS vulnerability is possible if the URL contains invalid characters `curl --path-as-is "http://localhost:3000//^/.."`The issue shows up on all the `fastify-static` applications that set `redirect: true` option. By default, it is `false`.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-22964

Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Affected Software

https://github.com/fastify/fastify-static
Vulnerable Versions:
Affected >= v4.2.4, Fixed v4.4.1

Timeline

Official Publish: October 14th, 2021
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H

Weaknesses (CWE)