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CVE-2020-7699

32
FAUCET Score

CVE-2020-7699 is a critical vulnerability affecting the express-fileupload package (versions prior to 1.1.8) and related products, including NetApp's express-fileupload and max_data. If the 'parseNested' option is enabled, an unauthenticated attacker can send a crafted HTTP request to achieve denial of service or arbitrary code execution. This vulnerability has a CVSS score of 9.8 (Critical) due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation in the wild, nor are there public exploit modules like Metasploit or Nuclei, it has garnered some community discussion and media attention, including a BleepingComputer article highlighting its potential for code injection.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.1.8CPE matchmatch criteria
cpe:2.3:a:express-fileupload_project:express-fileupload:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:max_data:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.76%
Probability of exploitation in next 30 days
EPSS Percentile
91.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0476 is in the 85th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

npmpatch availablevia ghsa
Product: express-fileuploadFixed in: 1.1.9

Vendor Advisories (1)

npmGHSA-9wcg-jrwf-8gg7critical

Prototype Pollution in express-fileupload

Aug 5, 2020

References

github.com / richardgirges/express-fileupload/issues/236
ExploitThird Party Advisory
security.netapp.com / advisory/ntap-20200821-0003
Third Party Advisory
snyk.io / vuln/SNYK-JS-EXPRESSFILEUPLOAD-595969
ExploitThird Party Advisory