cve.bz

CVE-2020-7616

5.3 mediumEPSS 1.3%

Medium (5.3) in express-mock-middleware project express-mock-middleware. EPSS 1.3% chance of exploitation in the next 30 days.

express-mock-middleware through 0.0.6 is vulnerable to Prototype Pollution. Exported functions by the package can be tricked into adding or modifying properties of the `Object.prototype`. Exploitation of this vulnerability requires creation of a new directory where an attack code can be placed which will then be exported by `express-mock-middleware`. As such, this is considered to be a low risk.

Severity

CVSS 3.1

5.3 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS
1.3% chance of exploitation in the next 30 days; higher than 69% of CVEs (scores of 2026-10-31)
CWE
CWE-1321
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-v39h-qm32-8gwqnpmexpress-mock-middleware<=0.0.6no fix published

References

Check your stackJSON