Vulnerability · Published Oct 8, 2020 · Assigned by GitHub_M

CVE-2020-15242Open Redirect in Next.js

Medium 4.7

In plain English

A medium-severity open redirect in next.js from vercel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.7Medium

Exploit odds (30 days)0.8%top 44.1% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	next	9.5.4	GHSA-x56p-c8cg-q435

Affected products (as reported)

Vendor	Product	Versions
vercel	next.js	>= 9.5.0, <9.5.4

Weakness: CWE-601 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

References

https://github.com/vercel/next.js/security/advisories/GHSA-x56p-c8cg-q435 x_refsource_CONFIRM
https://github.com/zeit/next.js/releases/tag/v9.5.4 x_refsource_MISC