How many CVEs have patched detectContentType?

1 published CVEs changed detectContentType in vercel/next.js, in 2 distinct patches totalling 23 changed lines, between 2026 and 2026.

What is the latest CVE that changed detectContentType?

CVE-2026-64644 (Next.js: Denial of Service in the Image Optimization API using SVGs), published 2026-07-27, changed lines 230 to 346 of packages/next/src/server/image-optimizer.ts.

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

vercel/next.js has 39 CVEs with a located fix in total; 1 of them changed detectContentType.

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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vercel/next.js

Function

detectContentType

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

packages/next/src/server/image-optimizer.ts

Last patched July 27, 2026

1

CVEs

That changed this function

2

Distinct patches

Backports counted once

23

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

detectContentType in vercel/next.js was changed by 1 published CVE fixes in 2026, in 2 distinct patches that added or removed 23 lines in total.

vercel/next.js has 39 CVEs with a located fix in total, so 3% of them touched this function.

CVEs that patched it

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

Next.js: Denial of Service in the Image Optimization API using SVGs
CVE-2026-64644 · lines 230–346 · +4 −19 in 3 hunks
Medium · CVSS 6.3
EPSS 0.7%2026-07-27

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Other functions in these files

Functions in the same file that CVE fixes also changed.

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 detectContentType.

How many CVEs have patched detectContentType?: 1 published CVEs changed detectContentType in vercel/next.js, in 2 distinct patches totalling 23 changed lines, between 2026 and 2026.
What is the latest CVE that changed detectContentType?: CVE-2026-64644 (Next.js: Denial of Service in the Image Optimization API using SVGs), published 2026-07-27, changed lines 230 to 346 of packages/next/src/server/image-optimizer.ts.
How does detectContentType compare to the rest of vercel/next.js?: vercel/next.js has 39 CVEs with a located fix in total; 1 of them changed detectContentType.
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

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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