How severe is CVE-2018-3752?

CVE-2018-3752 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-3752 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-3752?

CVE-2018-3752 affects Merge-options Project Merge-options. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-3752?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-3752 published?

CVE-2018-3752 was published on 2018-07-03 and last updated on 2026-06-17.

CVE-2018-3752

CVE-2018-3752 is a critical-severity vulnerability in Merge-options Project Merge-options with a CVSS 3.x base score of 9.8. 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-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Merge-options Project Merge-options
Published: 2018-07-03
Last modified: 2026-06-17

Description

The utilities function in all versions <= 1.0.0 of the merge-options 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.

Frequently asked questions

What is CVE-2018-3752?: The utilities function in all versions <= 1.0.0 of the merge-options 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.
How severe is CVE-2018-3752?: CVE-2018-3752 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-3752 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-3752?: CVE-2018-3752 affects Merge-options Project Merge-options. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-3752?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-3752 published?: CVE-2018-3752 was published on 2018-07-03 and last updated on 2026-06-17.

References

https://hackerone.com/reports/311336

Affected products (1)

cpe:2.3:a:merge-options_project:merge-options:*:*:*:*:*:node.js:*:*

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