CVE-2026-94485
Next.js: Information disclosure in Next.js App Router metadata image routes via dynamicParams bypass
Next.js is a React framework for building full-stack web applications. From 16.0.0 until 16.3.8, the next dev development server exposes a Model Context Protocol endpoint without reliably restricting cross-site requests. A malicious website visited by a developer can reach the endpoint and read the project's disk location, source code snippets from error reports, route inventory, and development logs. Production deployments do not serve this endpoint. This issue is fixed in version 16.3.8.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Next.js: Information disclosure in Next.js App Router metadata image routes via dynamicParams bypass
Next.js is a React framework for building full-stack web applications. From 16.0.0 until 16.3.8, the next dev development server exposes a Model Context Protocol endpoint without reliably restricting cross-site requests. A malicious website visited by a developer can reach the endpoint and read the project's disk location, source code snippets from error reports, route inventory, and development logs. Production deployments do not serve this endpoint. This issue is fixed in version 16.3.8.
- Record
CVE-2026-94485- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-346
- Updated
- 2026-11-02
EUVDEUVD-2026-91673
Next.js is a React framework for building full-stack web applications. From 16.0.0 until 16.3.8, the next dev development server exposes a Model Context Protocol endpoint without reliably restricting cross-site requests. A malicious website visited by a developer can reach the endpoint and read the project's disk location, source code snippets from error reports, route inventory, and development logs. Production deployments do not serve this endpoint. This issue is fixed in version 16.3.8.
- Record
EUVD-2026-91673- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-f87g-xv8r-7p7x
Next.js has information disclosure in App Router metadata image routes via dynamicParams bypass
In Next.js App Router applications built with webpack, metadata image routes such as opengraph-image and twitter-image ignore the dynamicParams route segment option. An attacker can request metadata image URLs for dynamic segments that were deliberately excluded from generateStaticParams().
- Record
GHSA-f87g-xv8r-7p7x- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-346
- Updated
- 2026-11-02
NVD
Next.js is a React framework for building full-stack web applications. From 16.0.0 until 16.3.8, the next dev development server exposes a Model Context Protocol endpoint without reliably restricting cross-site requests. A malicious website visited by a developer can reach the endpoint and read the project's disk location, source code snippets from error reports, route inventory, and development logs. Production deployments do not serve this endpoint. This issue is fixed in version 16.3.8.
- Record
CVE-2026-94485- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-346
- Updated
- 2026-11-02
OSV
Next.js: Information disclosure in Next.js App Router metadata image routes via dynamicParams bypass
Next.js is a React framework for building full-stack web applications. From 16.0.0 until 16.3.8, the next dev development server exposes a Model Context Protocol endpoint without reliably restricting cross-site requests. A malicious website visited by a developer can reach the endpoint and read the project's disk location, source code snippets from error reports, route inventory, and development logs. Production deployments do not serve this endpoint. This issue is fixed in version 16.3.8.
- Record
CVE-2026-94485- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-346
- Updated
- 2026-11-02
OSVGHSA-f87g-xv8r-7p7x
Next.js has information disclosure in App Router metadata image routes via dynamicParams bypass
In Next.js App Router applications built with webpack, metadata image routes such as opengraph-image and twitter-image ignore the dynamicParams route segment option. An attacker can request metadata image URLs for dynamic segments that were deliberately excluded from generateStaticParams().
- Record
GHSA-f87g-xv8r-7p7x- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-346
- Updated
- 2026-11-02
Show 15 moreShow less
OSVCLSA-2026-1791978826 No score
TuxCare security update for next (5 CVEs)
TuxCare rebuilt next to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1791978826- Updated
- 2026-11-02
OSVCLSA-2026-1792195752 No score
TuxCare security update for create-next-app (5 CVEs)
TuxCare rebuilt create-next-app to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1792195752- Updated
- 2026-11-02
OSVCLSA-2026-1792196732 No score
TuxCare security update for @next/eslint-plugin-next (5 CVEs)
TuxCare rebuilt @next/eslint-plugin-next to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1792196732- Updated
- 2026-11-02
OSVCLSA-2026-1792206293 No score
TuxCare security update for @next/bundle-analyzer (5 CVEs)
TuxCare rebuilt @next/bundle-analyzer to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1792206293- Updated
- 2026-11-02
OSVCLSA-2026-1792256970 No score
TuxCare security update for next-rspack (5 CVEs)
TuxCare rebuilt next-rspack to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1792256970- Updated
- 2026-11-02
OSVCLSA-2026-1792272234 No score
TuxCare security update for @next/plugin-storybook (5 CVEs)
TuxCare rebuilt @next/plugin-storybook to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1792272234- Updated
- 2026-11-02
OSVCLSA-2026-1792293005 No score
TuxCare security update for @next/polyfill-module (5 CVEs)
TuxCare rebuilt @next/polyfill-module to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1792293005- Updated
- 2026-11-02
OSVCLSA-2026-1792304725 No score
TuxCare security update for @next/polyfill-nomodule (5 CVEs)
TuxCare rebuilt @next/polyfill-nomodule to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1792304725- Updated
- 2026-11-02
OSVCLSA-2026-1792326298 No score
TuxCare security update for @next/react-refresh-utils (5 CVEs)
TuxCare rebuilt @next/react-refresh-utils to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1792326298- Updated
- 2026-11-02
OSVCLSA-2026-1792338248 No score
TuxCare security update for @next/third-parties (5 CVEs)
TuxCare rebuilt @next/third-parties to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1792338248- Updated
- 2026-11-02
OSVCLSA-2026-1792346474 No score
TuxCare security update for @next/swc-linux-x64-gnu (5 CVEs)
TuxCare rebuilt @next/swc-linux-x64-gnu to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1792346474- Updated
- 2026-11-02
OSVCLSA-2026-1792358591 No score
TuxCare security update for @next/codemod (5 CVEs)
TuxCare rebuilt @next/codemod to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1792358591- Updated
- 2026-11-02
OSVCLSA-2026-1792363991 No score
TuxCare security update for @next/mdx (5 CVEs)
TuxCare rebuilt @next/mdx to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1792363991- Updated
- 2026-11-02
OSVCLSA-2026-1792367398 No score
TuxCare security update for @next/swc-linux-arm64-gnu (5 CVEs)
TuxCare rebuilt @next/swc-linux-arm64-gnu to address 5 CVEs. Fixed in 16.0.6-tuxcare.13.
- Record
CLSA-2026-1792367398- Updated
- 2026-11-02
OSVROOT-APP-NPM-CVE-2026-94485 No score
CVE-2026-94485 in next - Patched by Root
Root has patched CVE-2026-94485 in the next package for Root:npm. Multiple fixed versions available.
- Record
ROOT-APP-NPM-CVE-2026-94485- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
nextnpm |
16.0.0 up to 16.3.8 | 16.3.8 |
nextTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.116.0.6-tuxcare.1016.0.6-tuxcare.1116.0.6-tuxcare.12 Show 8 moreShow less16.0.6-tuxcare.216.0.6-tuxcare.316.0.6-tuxcare.416.0.6-tuxcare.516.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
create-next-appTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.1016.0.6-tuxcare.1216.0.6-tuxcare.316.0.6-tuxcare.4 Show 5 moreShow less16.0.6-tuxcare.516.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
@next/eslint-plugin-nextTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.1016.0.6-tuxcare.1216.0.6-tuxcare.316.0.6-tuxcare.4 Show 5 moreShow less16.0.6-tuxcare.516.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
@next/bundle-analyzerTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.1016.0.6-tuxcare.1216.0.6-tuxcare.316.0.6-tuxcare.4 Show 5 moreShow less16.0.6-tuxcare.516.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
next-rspackTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.1016.0.6-tuxcare.1216.0.6-tuxcare.316.0.6-tuxcare.4 Show 5 moreShow less16.0.6-tuxcare.516.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
@next/plugin-storybookTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.1016.0.6-tuxcare.1216.0.6-tuxcare.316.0.6-tuxcare.4 Show 5 moreShow less16.0.6-tuxcare.516.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
@next/polyfill-moduleTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.1016.0.6-tuxcare.1216.0.6-tuxcare.316.0.6-tuxcare.4 Show 5 moreShow less16.0.6-tuxcare.516.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
@next/polyfill-nomoduleTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.1016.0.6-tuxcare.1216.0.6-tuxcare.316.0.6-tuxcare.4 Show 5 moreShow less16.0.6-tuxcare.516.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
@next/react-refresh-utilsTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.1016.0.6-tuxcare.1216.0.6-tuxcare.316.0.6-tuxcare.4 Show 5 moreShow less16.0.6-tuxcare.516.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
Show 7 moreShow less
| Package | Affected | Fixed |
|---|---|---|
@next/third-partiesTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.1016.0.6-tuxcare.1216.0.6-tuxcare.316.0.6-tuxcare.4 Show 5 moreShow less16.0.6-tuxcare.516.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
@next/swc-linux-x64-gnuTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.1016.0.6-tuxcare.316.0.6-tuxcare.416.0.6-tuxcare.5 Show 4 moreShow less16.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
@next/codemodTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.1016.0.6-tuxcare.1216.0.6-tuxcare.316.0.6-tuxcare.4 Show 5 moreShow less16.0.6-tuxcare.516.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
@next/mdxTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.1016.0.6-tuxcare.1216.0.6-tuxcare.316.0.6-tuxcare.4 Show 5 moreShow less16.0.6-tuxcare.516.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
@next/swc-linux-arm64-gnuTuxCare:npm From an advisory covering 5 CVEs |
16.0.6-tuxcare.0 up to 16.0.6-tuxcare.13, plus listed versions 16.0.616.0.6-tuxcare.1016.0.6-tuxcare.316.0.6-tuxcare.416.0.6-tuxcare.5 Show 4 moreShow less16.0.6-tuxcare.616.0.6-tuxcare.716.0.6-tuxcare.816.0.6-tuxcare.9 |
16.0.6-tuxcare.13 |
nextRoot:npm |
before 16.3.8-aikido.1 | 16.3.8-aikido.1 |
@rootio/nextRoot:npm |
before 16.3.8-root.io.1 | 16.3.8-root.io.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-94485 is a medium vulnerability (CVSS 6.3) in Vercel Next.js, published October 2, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 6th percentile. Fixed in next 16.3.8.
References
github.com/vercel/next.js/security/advisories/GHSA-f87g-xv8r-7p7x
nvd.nist.gov/vuln/detail/CVE-2026-94485