Vulnerability · Published Jul 30, 2020 · Assigned by snyk
CVE-2020-7699Prototype Pollution
High 7.5
In plain English
A high-severity security flaw in express-fileupload. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.8% (higher than 92% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)4.8%top 8.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Public PoC
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | express-fileupload | 1.1.9 | GHSA-9wcg-jrwf-8gg7 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | express-fileupload | unspecified – before 1.1.8 |
References
- https://snyk.io/vuln/SNYK-JS-EXPRESSFILEUPLOAD-595969 x_refsource_MISC
- https://github.com/richardgirges/express-fileupload/issues/236 x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20200821-0003/ x_refsource_CONFIRM