PatchTheCVECVE-2018-16486: A prototype pollution vulnerability was found in defaults-deep <=0.2.4 that would allow a malicious user to in
CVE-2018-16486 is a critical-severity flaw (CVSS 9.8) affecting defaults-deep. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A prototype pollution vulnerability was found in defaults-deep <=0.2.4 that would allow a malicious user to inject properties onto Object.prototype.
Why this priority
- Critical severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2018-16486?
defaults-deep: upgrade to newer than 0.2.4. Exact commands for each OS are on this page.
Is CVE-2018-16486 being exploited?
CVE-2018-16486 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2018-16486 affect?
CVE-2018-16486 affects defaults-deep. Severity is critical (CVSS 9.8). A prototype pollution vulnerability was found in defaults-deep <=0.2.4 that would allow a malicious user to inject properties onto Object.prototype.
How urgent is CVE-2018-16486?
Priority 63/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2018-3723 HIGH 8.8 UPGRADE defaults-deep node module before 0.2.4 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerabil