CVE-2020-7699

CVE-2020-7699 is a high-severity vulnerability in Express-fileupload Project Express-fileupload with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.

Key facts

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.

Frequently asked questions

What is CVE-2020-7699?
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.
How severe is CVE-2020-7699?
CVE-2020-7699 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-7699 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-7699?
CVE-2020-7699 primarily affects Express-fileupload Project Express-fileupload. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-7699?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-7699 published?
CVE-2020-7699 was published on 2020-07-30 and last updated on 2026-06-17.

References

Affected products (2)

More vulnerabilities in Express-fileupload Project Express-fileupload

All CVEs affecting Express-fileupload Project Express-fileupload →

Other CWE-1321 (Prototype Pollution) vulnerabilities

Browse all CWE-1321 (Prototype Pollution) vulnerabilities →