Open Redirect in Vercel Next.js
CVE-2020-15242
Next.js versions >=9.5.0 and <9.5.4 are vulnerable to an Open Redirect. Specially encoded paths could be used with the trailing slash redirect to allow an open redirect to occur to an external site. In general, this redirect does not directly harm users although can allow for phishing attacks by redirecting to an attackers domain from a trusted domain. The issue is fixed in version 9.5.4.
Vulnerability class: Open Redirect
EPSS: 0.008 (52.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N.
Affected products
- Vercel Next.js — versions >= 9.5.0, <9.5.4
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2020-15242?
- CVE-2020-15242 is a medium-severity vulnerability in Vercel Next.js, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.7/10. Published 2020-10-08.
- How severe is CVE-2020-15242?
- Medium severity. CVSS v3 base score is 4.7 out of 10.