Strix
26.1K

CVE-2021-22963

MEDIUMCVSS 6.1/10EPSS 1.13%

Last modified

CVE-2021-22963 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A redirect vulnerability in the fastify-static module version < 4.2.4 allows remote attackers to redirect users to arbitrary websites via a double slash // followed by a domain: http://localhost:3000//google.com/%2e%2e.The issue shows up on all the fastify-static applications that set redirect: true option. By default, it is false.. EPSS estimates a 1.13% chance of exploitation in the next 30 days.

Description

A redirect vulnerability in the fastify-static module version < 4.2.4 allows remote attackers to redirect users to arbitrary websites via a double slash // followed by a domain: http://localhost:3000//google.com/%2e%2e.The issue shows up on all the fastify-static applications that set redirect: true option. By default, it is false.

Metrics

CVSS 3.1
6.1/10

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

EPSS Probability
1.13%

62.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FastifyFastify-Static< 4.2.4

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-22963?
A redirect vulnerability in the fastify-static module version < 4.2.4 allows remote attackers to redirect users to arbitrary websites via a double slash // followed by a domain: http://localhost:3000//google.com/%2e%2e.The issue shows up on all the fastify-static applications that set redirect: true option. By default, it is false.
How severe is CVE-2021-22963?
CVE-2021-22963 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.13% probability of exploitation in the next 30 days.
How do I fix CVE-2021-22963?
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-2021-22963?

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

Scan your code now

Source: NVD / NIST