CVE-2020-15242

Summary

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.

Impact & exploitability

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

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://github.com/vercel/next.js/security/advisories/GHSA-x56p-c8cg-q435 ↗

Additional information

• NVD record
• https://github.com/vercel/next.js/security/advisories/GHSA-x56p-c8cg-q435Patch
• https://github.com/zeit/next.js/releases/tag/v9.5.4Advisory