Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a
rewrites() or redirects() rule that builds its external destination hostname from request-controlled input can be pointed at an arbitrary hostname, regardless of the rule's hostname suffix. For a rewrite, Next.js proxies the request to that arbitrary host and serves the response from the application's origin, leading to Server-Side Request forgery.
A redirects() rule configured this way is vulnerable to an Open Redirect. This issue has been fixed in versions 15.5.21 and 16.2.11.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 2
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Vercel Next.Js
cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*
|
12.0.0
|
15.5.21
|
|
Vercel Next.Js
cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*
|
16.0.0
|
16.2.11
|
References 5
https://github.com/vercel/next.js/security/advisories/GHSA-p9j2-gv94-2wf4
https://github.com/vercel/next.js/security/advisories/GHSA-p9j2-gv94-2wf4
https://github.com/vercel/next.js/commit/35f501357e9b0fe7c950b0d6aa8fcf5343f707…
https://github.com/vercel/next.js/commit/35f501357e9b0fe7c950b0d6aa8fcf5343f707e9
https://github.com/vercel/next.js/commit/d3033266c6dff23f7be71e19341fe3a8c6e2c5…
https://github.com/vercel/next.js/commit/d3033266c6dff23f7be71e19341fe3a8c6e2c599
https://github.com/vercel/next.js/releases/tag/v15.5.21
https://github.com/vercel/next.js/releases/tag/v15.5.21
https://github.com/vercel/next.js/releases/tag/v16.2.11
https://github.com/vercel/next.js/releases/tag/v16.2.11