CVE-2018-3749: The utilities function in all versions < 1.0.1 of the deap node module can be tricked into modifying the proto

Q: How urgent is CVE-2018-3749?

Priority 63/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2018-3749 is a critical-severity flaw (CVSS 9.8) affecting deap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The utilities function in all versions < 1.0.1 of the deap 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	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-20
Published	2018-07-03
Last modified	2026-06-17

Publisher (CNA): HackerOne · Vendor: deap project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-07-03 21:29 UTCPublished CVE record published
2026-06-17 01:57 UTCUpdated Record last modified

deap project deap UPGRADE

Affected: < 1.0.1

Fixed in: 1.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls deap

2. UPGRADE to 1.0.1

npm install deap@">=1.0.1"

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2018-3749?

deap: upgrade to 1.0.1. Exact commands for each OS are on this page.

Is CVE-2018-3749 being exploited?

CVE-2018-3749 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-2018-3749 affect?

CVE-2018-3749 affects deap. Severity is critical (CVSS 9.8). The utilities function in all versions < 1.0.1 of the deap 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

How urgent is CVE-2018-3749?

Priority 63/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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