Critical

Prototype Pollution in express-fileupload

  • Disclosed: 05.08.2020
  • Updated: 11.10.2026 10:22

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.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package express-fileupload < 1.1.9 1.1.9

References

CVSS score 9.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-1321, CWE-915
Platform
npm
Package
express-fileupload
Disclosed
05.08.2020
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-9wcg-jrwf-8gg7 - CC BY 4.0

Vulnerability history: express-fileupload

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
3
First → latest
08.2020 04.2022
Without a fix
1
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • High 1
  • Low 1

Disclosures per year

  1. 2020: 2
  2. 2021: 0
  3. 2022: 1
  4. 2023: 0
  5. 2024: 0
  6. 2025: 0
  7. 2026: 0
  1. High · 7.5 CVE-2022-27261 <= 1.3.1 no fix
  2. Low ghsa-q3w9-g74q-vp5f < 1.1.6-alpha.6, < 1.1.6-alpha.6, < 1.1.6-alpha.6, < 1.1.6-alpha.6, < 1.1.6-alpha.6 1.1.6-alpha.6
  3. Prototype Pollution in express-fileupload this entry
    Critical · 9.8 CVE-2020-7699 < 1.1.9 1.1.9

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