GHSA-f7qw-5pvg-mmwp
Prototype Pollution in lutils-merge
GHSA-f7qw-5pvg-mmwp is a high vulnerability (CVSS 7.3) in lutils-merge, published June 13, 2019. No source lists public exploit code. No source names a fixed version.
- Severity
- 7.3 HighCVSS 3.1, GitHub Advisories
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
All versions of lutils-merge are vulnerable to Prototype Pollution. The merge() function fails to prevent user input to alter an Object's prototype, allowing attackers to modify override properties of all objects in the application. This may lead to Denial of Service or may be chained with other vulnerabilities leading to Remote Code Execution.
Recommendation
The package is deprecated and no fixes are available. Consider using an alternative package.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Affected packages
| Package | Affected | Fixed |
|---|---|---|
lutils-mergenpm | through 0.2.6 | None known |
What each source reports
GitHub Advisories Score used
Prototype Pollution in lutils-merge
All versions of lutils-merge are vulnerable to Prototype Pollution. The merge() function fails to prevent user input to alter an Object's prototype, allowing attackers to modify override properties of all objects in the application. This may lead to Denial of Service or may be chained with other vulnerabilities leading to Remote Code Execution.
Recommendation
The package is deprecated and no fixes are available. Consider using an alternative package.
- Record
GHSA-f7qw-5pvg-mmwp- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-400
- Updated
- 2026-11-02
OSV
Prototype Pollution in lutils-merge
All versions of lutils-merge are vulnerable to Prototype Pollution. The merge() function fails to prevent user input to alter an Object's prototype, allowing attackers to modify override properties of all objects in the application. This may lead to Denial of Service or may be chained with other vulnerabilities leading to Remote Code Execution.
Recommendation
The package is deprecated and no fixes are available. Consider using an alternative package.
- Record
GHSA-f7qw-5pvg-mmwp- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-400
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.