Uncontrolled resource consumption in HackerOne merge
Priority LOW 36CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-400.
Summary
The merge.recursive function in the merge package <1.2.1 can be tricked into adding or modifying properties of the Object prototype. These properties will be present on all objects allowing for a denial of service attack.
Why it matters now
EPSS 0.01678 77th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed merge (HackerOne): 1.2.1merge (npm): 1.2.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| HackerOne | merge | before 1.2.1 | 1.2.1 | Patch available | CNA |
| — | merge (npm) | before 1.2.1 | 1.2.1 | Patch available | GHSA-f9cm-qmx5-m98h |
- merge VendorHackerOne Affected before 1.2.1 Fixed in 1.2.1 Patch available CNA
- merge (npm) Vendor— Affected before 1.2.1 Fixed in 1.2.1 Patch available GHSA-f9cm-qmx5-m98h
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:merge_project:merge:*:*:*:*:*:node.js:*:* | before 1.2.1 | Vulnerable | Merge Project |
- cpe:2.3:a:merge_project:merge:*:*:*:*:*:node.js:*:* Versions before 1.2.1 Vulnerable ·Merge Project
Remediation
- Fix · CNA merge (HackerOne) Fixed in 1.2.1
- Fix · GHSA-f9cm-qmx5-m98h merge (npm) Fixed in 1.2.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2018-16469
- 2026-10-03 Alias added: GHSA-f9cm-qmx5-m98h
References
More Merge Project Merge vulnerabilities
- TI-2021-02590 Prototype Pollution in viking04/merge CVSS 3.1CRITICAL 9.8
- TI-2020-17302 Prototype pollution in merge CVSS 3.1CRITICAL 9.8
- TI-2021-06090 Prototype pollution in @ianwalter/merge CVSS 3.1CRITICAL 9.8
Sources
- CVE-2018-16469 · CVE Program
- CVE-2018-16469 · NVD
- FIRST EPSS
- GHSA-f9cm-qmx5-m98h · GitHub Advisory Database · CC BY 4.0
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