| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-ggv3-7p47-pfv8 | Next.js: HTTP request smuggling in rewrites |
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Wed, 18 Mar 2026 20:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* | |
| Metrics |
cvssV3_1
|
Wed, 18 Mar 2026 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 18 Mar 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Vercel
Vercel next.js |
|
| Vendors & Products |
Vercel
Vercel next.js |
Wed, 18 Mar 2026 01:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Next.js is a React framework for building full-stack web applications. Starting in version 9.5.0 and prior to versions 15.5.13 and 16.1.7, when Next.js rewrites proxy traffic to an external backend, a crafted `DELETE`/`OPTIONS` request using `Transfer-Encoding: chunked` could trigger request boundary disagreement between the proxy and backend. This could allow request smuggling through rewritten routes. An attacker could smuggle a second request to unintended backend routes (for example, internal/admin endpoints), bypassing assumptions that only the configured rewrite destination/path is reachable. This does not impact applications hosted on providers that handle rewrites at the CDN level, such as Vercel. The vulnerability originated in an upstream library vendored by Next.js. It is fixed in Next.js 15.5.13 and 16.1.7 by updating that dependency’s behavior so `content-length: 0` is added only when both `content-length` and `transfer-encoding` are absent, and `transfer-encoding` is no longer removed in that code path. If upgrading is not immediately possible, block chunked `DELETE`/`OPTIONS` requests on rewritten routes at the edge/proxy, and/or enforce authentication/authorization on backend routes. | |
| Title | Next.js: HTTP request smuggling in rewrites | |
| Weaknesses | CWE-444 | |
| References |
| |
| Metrics |
cvssV4_0
|
Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-03-18T14:47:25.258Z
Reserved: 2026-03-03T17:50:11.244Z
Link: CVE-2026-29057
Updated: 2026-03-18T14:47:18.781Z
Status : Analyzed
Published: 2026-03-18T01:16:05.443
Modified: 2026-03-18T19:49:19.633
Link: CVE-2026-29057
No data.
OpenCVE Enrichment
Updated: 2026-03-18T10:42:23Z
Github GHSA