CVE-2020-5284
Directory Traversal in Next.js versions below 9.3.2
Next.js versions before 9.3.2 have a directory traversal vulnerability. Attackers could craft special requests to access files in the dist directory (.next). This does not affect files outside of the dist directory (.next). In general, the dist directory only holds build assets unless your application intentionally stores other assets under this directory. This issue is fixed in version 9.3.2.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Directory Traversal in Next.js versions below 9.3.2
Next.js versions before 9.3.2 have a directory traversal vulnerability. Attackers could craft special requests to access files in the dist directory (.next). This does not affect files outside of the dist directory (.next). In general, the dist directory only holds build assets unless your application intentionally stores other assets under this directory. This issue is fixed in version 9.3.2.
- Record
CVE-2020-5284- CVSS 3.1
- 4.4 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-23
- Updated
- 2026-11-02
EUVDEUVD-2020-0342
Next.js versions before 9.3.2 have a directory traversal vulnerability. Attackers could craft special requests to access files in the dist directory (.next). This does not affect files outside of the dist directory (.next). In general, the dist directory only holds build assets unless your application intentionally stores other assets under this directory. This issue is fixed in version 9.3.2.
- Record
EUVD-2020-0342- CVSS 3.1
- 4.4 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-fq77-7p7r-83rj
Directory Traversal in Next.js
Impact
- Not affected: Deployments on ZEIT Now v2 (https://zeit.co) are not affected
- Not affected: Deployments using the
serverlesstarget - Not affected: Deployments using
next export - Affected: Users of Next.js below 9.3.2
We recommend everyone to upgrade regardless of whether you can reproduce the issue or not.
Patches
https://github.com/zeit/next.js/releases/tag/v9.3.2
References
- Record
GHSA-fq77-7p7r-83rj- CVSS 3.1
- 4.4 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-23
- Updated
- 2026-11-02
NVD
Next.js versions before 9.3.2 have a directory traversal vulnerability. Attackers could craft special requests to access files in the dist directory (.next). This does not affect files outside of the dist directory (.next). In general, the dist directory only holds build assets unless your application intentionally stores other assets under this directory. This issue is fixed in version 9.3.2.
- Record
CVE-2020-5284- CVSS 3.1
- 4.4 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-23, CWE-22
- Updated
- 2026-11-02
OSV
Next.js versions before 9.3.2 have a directory traversal vulnerability. Attackers could craft special requests to access files in the dist directory (.next). This does not affect files outside of the dist directory (.next). In general, the dist directory only holds build assets unless your application intentionally stores other assets under this directory. This issue is fixed in version 9.3.2.
- Record
CVE-2020-5284- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-fq77-7p7r-83rj
Directory Traversal in Next.js
Impact
- Not affected: Deployments on ZEIT Now v2 (https://zeit.co) are not affected
- Not affected: Deployments using the
serverlesstarget - Not affected: Deployments using
next export - Affected: Users of Next.js below 9.3.2
We recommend everyone to upgrade regardless of whether you can reproduce the issue or not.
Patches
https://github.com/zeit/next.js/releases/tag/v9.3.2
References
- Record
GHSA-fq77-7p7r-83rj- CVSS 3.1
- 4.4 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-23
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
nextnpm |
0.9.9 up to 9.3.2 | 9.3.2 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Nuclei | Next.js <9.3.2 - Local File Inclusion |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, Nuclei, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-5284 is a medium vulnerability (CVSS 4.4) in Vercel Next.js, published March 30, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 44.8%, the 98th percentile. Fixed in next 9.3.2.