Skip to content

Prototype pollution in `Parse.Object` and internal APIs

Moderate
mtrezza published GHSA-9f2h-7v79-mxw3 Oct 14, 2025

Package

npm parse (npm)

Affected versions

<7.0.0

Patched versions

>=7.0.0

Description

Summary

Prototype pollution capabilities on various APIs.

Details

Injection of malicious payload allows attacker to remotely execute arbitrary code. Parse.Object and internal APIs are affected, specifically:

  • ParseObject.fromJSON
  • ParseObject.pin
  • ParseObject.registerSubclass
  • ObjectStateMutations (internal)
  • encode/decode (internal)

PoC

Demonstrative tests added as part of the fix.

References

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L

CVE ID

CVE-2025-62374

Weaknesses

No CWEs

Credits