Description
This affects the package express-fileupload before 1.1.8. If the parseNested option is enabled, sending a corrupt HTTP request can lead to denial of service or arbitrary code execution.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| snykCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 4.8% · top 8.1% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- Prototype Pollution
- CWE-1321 (opens in a new tab)All about CWE-1321 and its CVEs
Affected products
express-fileupload
- affected unspecified – < 1.1.8
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmexpress-fileuploadGHSA-9wcg-jrwf-8gg7 (opens in a new tab)
References (3)
- https://snyk.io/vuln/SNYK-JS-EXPRESSFILEUPLOAD-595969 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/richardgirges/express-fileupload/issues/236 (opens in a new tab)x_refsource_MISCx_transferred
- https://security.netapp.com/advisory/ntap-20200821-0003/ (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-9wcg-jrwf-8gg7 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-7699)Record last updated .