PatchTheCVECVE-2018-3750: The utilities function in all versions <= 0.5.0 of the deep-extend node module can be tricked into modifying t
CVE-2018-3750 is a critical-severity flaw (CVSS 9.8) affecting deep extend. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The utilities function in all versions <= 0.5.0 of the deep-extend node module can be tricked into modifying the prototype of Object when the attacker can control part of the structure passed to this function. This can let an attacker add or modify existing properties that will exist on all objects.
Why this priority
- Critical severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.1% (top 18%) |
| CISA exploited list | No |
| Weakness | CWE-20 |
| Published | 2018-07-03 |
| Last modified | 2026-06-17 |
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-2018-3750?
deep extend: upgrade to newer than 0.5.0. Exact commands for each OS are on this page.
Is CVE-2018-3750 being exploited?
CVE-2018-3750 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-2018-3750 affect?
CVE-2018-3750 affects deep extend. Severity is critical (CVSS 9.8). The utilities function in all versions <= 0.5.0 of the deep-extend node module can be tricked into modifying the prototype of Object when the attacker can control part of the structure passed to this function. This can let an attacker add o
How urgent is CVE-2018-3750?
Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action