chore(deps): update dependency next to v16.1.7 [security]#8344
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chore(deps): update dependency next to v16.1.7 [security]#8344renovate[bot] wants to merge 1 commit intomainfrom
renovate[bot] wants to merge 1 commit intomainfrom
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This PR contains the following updates:
16.1.6→16.1.7GitHub Vulnerability Alerts
CVE-2026-27977
Summary
In
next dev, cross-site protection for internal websocket endpoints could treatOrigin: nullas a bypass case even ifallowedDevOriginsis configured, allowing privacy-sensitive/opaque contexts (for example sandboxed documents) to connect unexpectedly.Impact
If a dev server is reachable from attacker-controlled content, an attacker may be able to connect to the HMR websocket channel and interact with dev websocket traffic. This affects development mode only.
Apps without a configured
allowedDevOriginsstill allow connections from any origin.Patches
Fixed by validating
Origin: nullthrough the same cross-site origin-allowance checks used for other origins.Workarounds
If upgrade is not immediately possible:
next devto untrusted networks./_next/webpack-hmrwhenOriginisnullat your proxy.CVE-2026-27978
Summary
origin: nullwas treated as a "missing" origin during Server Action CSRF validation. As a result, requests from opaque contexts (such as sandboxed iframes) could bypass origin verification instead of being validated as cross-origin requests.Impact
An attacker could induce a victim browser to submit Server Actions from a sandboxed context, potentially executing state-changing actions with victim credentials (CSRF).
Patches
Fixed by treating
'null'as an explicit origin value and enforcing host/origin checks unless'null'is explicitly allowlisted inexperimental.serverActions.allowedOrigins.Workarounds
If upgrade is not immediately possible:
SameSite=Stricton sensitive auth cookies.'null'inserverActions.allowedOriginsunless intentionally required and additionally protected.CVE-2026-27979
Summary
A request containing the
next-resume: 1header (corresponding with a PPR resume request) would buffer request bodies without consistently enforcingmaxPostponedStateSizein certain setups. The previous mitigation protected minimal-mode deployments, but equivalent non-minimal deployments remained vulnerable to the same unbounded postponed resume-body buffering behavior.Impact
In applications using the App Router with Partial Prerendering capability enabled (via
experimental.pprorcacheComponents), an attacker could send oversizednext-resumePOST payloads that were buffered without consistent size enforcement in non-minimal deployments, causing excessive memory usage and potential denial of service.Patches
Fixed by enforcing size limits across all postponed-body buffering paths and erroring when limits are exceeded.
Workarounds
If upgrade is not immediately possible:
next-resumeheader, as this is never valid to be sent from an untrusted client.Release Notes
vercel/next.js (next)
v16.1.7Compare Source
Configuration
📅 Schedule: Branch creation - "" (UTC), Automerge - At any time (no schedule defined).
🚦 Automerge: Enabled.
♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
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