How many CVEs have patched async?

4 published CVEs changed async in vercel/next.js, in 3 distinct patches totalling 107 changed lines, between 2022 and 2026.

What is the latest CVE that changed async?

CVE-2026-94484 (Next.js: Cache poisoning in Next.js SSG/ISR rendering leads to cross-user content substitution and persistent denial of service), published 2026-10-02, changed lines 4 to 23 of packages/next/src/server/lib/node-fs-methods.ts.

How does async compare to the rest of vercel/next.js?

vercel/next.js has 39 CVEs with a located fix in total; 4 of them changed async.

What do the line numbers refer to?

Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

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Patched Functions
Vercel
Next.js
Async

async in vercel/next.js: Patched by 4 CVEs

vercel/next.js

Function

3 files

async

Name: async in vercel/next.js: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

Defined in 3 files

Last patched October 2, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

107

Lines changed

Added plus removed

2022–2026

Years

By CVE publication date

Overview

async in vercel/next.js was changed by 4 published CVE fixes between 2022 and 2026, in 3 distinct patches that added or removed 107 lines in total.

The name occurs in 3 files: packages/next/src/server/lib/node-fs-methods.ts, packages/next/server/next-server.ts, packages/next/src/server/app-render/action-handler.ts.

vercel/next.js has 39 CVEs with a located fix in total, so 10% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed async, newest first, with the lines each fix touched.

Next.js: Cache poisoning in Next.js SSG/ISR rendering leads to cross-user content substitution and persistent denial of service
CVE-2026-94484 · packages/next/src/server/lib/node-fs-methods.ts · lines 4–23 · +14 −0
Medium · CVSS 6.3
EPSS 0.2%2026-10-02
Next.js: Cache poisoning of SSG and ISR pages in self-hosted Next.js applications
CVE-2026-94543 · packages/next/src/server/lib/node-fs-methods.ts · lines 4–23 · +14 −0
Medium · CVSS 6.3
EPSS 0.3%2026-10-02
Next.js: Unauthenticated Disclosure of Internal Server Function endpoints
CVE-2026-64643 · packages/next/src/server/app-render/action-handler.ts · line 686 · +1 −1
Medium · CVSS 6.3
EPSS 0.5%2026-07-27
Improper CSP in Image Optimization API for Next.js versions between 10.0.0 and 12.1.0
CVE-2022-23646 · packages/next/server/next-server.ts · lines 173–258 · +72 −5
High · CVSS 7.5
EPSS 1.8%2022-02-17

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Other functions in these files

Functions in the same files that CVE fixes also changed.

1createRedirectRenderResultpackages/next/src/server/app-render/action-handler.ts2 CVEs · 4 patches2024 to 2026
2handleActionpackages/next/src/server/app-render/action-handler.ts2 CVEs · 3 patches2026
3createForwardedActionResponsepackages/next/src/server/app-render/action-handler.ts1 CVEs · 2 patches2026
4getActionNotFoundErrorpackages/next/src/server/app-render/action-handler.ts1 CVEs · 2 patches2026
5getInvalidServerReferenceIdErrorpackages/next/src/server/app-render/action-handler.ts1 CVEs · 2 patches2026
6isInvalidActionIdFieldNamepackages/next/src/server/app-render/action-handler.ts1 CVEs · 2 patches2026
7isInvalidStringActionDescriptorpackages/next/src/server/app-render/action-handler.ts1 CVEs · 2 patches2026
8areAllActionIdsValidpackages/next/src/server/app-render/action-handler.ts1 CVEs · 2 patches2026

Other hotspots in the repository

Functions in vercel/next.js changed by the most CVE fixes.

createRedirectRenderResult2 CVEs · packages/next/src/server/app-render/action-handler.ts createPatchedFetcher2 CVEs · packages/next/src/server/lib/patch-fetch.ts handleAction2 CVEs · packages/next/src/server/app-render/action-handler.ts initialize2 CVEs · packages/next/src/server/lib/router-server.ts exportPageImpl2 CVEs · packages/next/src/export/worker.ts exportPagesPage2 CVEs · packages/next/src/export/routes/pages.ts

All patched functions in vercel/next.js

Frequently asked questions

Common questions about CVE fixes to async.

How many CVEs have patched async?: 4 published CVEs changed async in vercel/next.js, in 3 distinct patches totalling 107 changed lines, between 2022 and 2026.
What is the latest CVE that changed async?: CVE-2026-94484 (Next.js: Cache poisoning in Next.js SSG/ISR rendering leads to cross-user content substitution and persistent denial of service), published 2026-10-02, changed lines 4 to 23 of packages/next/src/server/lib/node-fs-methods.ts.
How does async compare to the rest of vercel/next.js?: vercel/next.js has 39 CVEs with a located fix in total; 4 of them changed async.
What do the line numbers refer to?: Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

References

packages/next/src/server/lib/node-fs-methods.ts on GitHub (opens in a new tab)
packages/next/server/next-server.ts on GitHub (opens in a new tab)
packages/next/src/server/app-render/action-handler.ts on GitHub (opens in a new tab)
All patched functions in vercel/next.js
Patched functions directory

Fix locations are computed by RadicalNotion.AI from the upstream patch diff of each CVE. CVE data is sourced from the CVE Program.

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On this page

Overview
CVEs that patched it
Other functions in these files
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References