Vulnerability DatabaseCVE-2026-119569
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CVE-2026-119569
Published:October 30, 2026
Updated:November 04, 2026
Parse Server before 8.6.108 and 9.0.0 before 9.10.5-alpha.9 contains a prototype pollution vulnerability because user-controlled keys are expanded into objects without own-property checks. Clients with class write access can send dot notation field keys or ACL entry names matching built-in object members to corrupt built-in functions, causing all requests to fail until server restart.
Affected Packages
https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=9.0.0-alpha.1 <9.10.5 || >=9.0.0 <9.10.5
Fix Suggestion:
Update to version 9.10.5
https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=2.0.0 <8.6.108 || >=3.0.0 <8.6.108 || >=4.0.0 <8.6.108 || >=5.0.0-alpha.1 <8.6.108 || >=5.0.0 <8.6.108 || >=6.0.0-alpha.1 <8.6.108 || >=6.0.0 <8.6.108 || >=7.0.0-alpha.1 <8.6.108 || >=7.0.0 <8.6.108 || >=8.0.0-alpha.1 <8.6.108 || >=8.0.0 <8.6.108
Fix Suggestion:
Update to version 8.6.108
parse-server (NPM):
Affected version(s) >=9.0.0 <9.10.5 || >=9.0.0-alpha.1 <9.10.5
Fix Suggestion:
Update to version 9.10.5
parse-server (NPM):
Affected version(s) >=4.0.2 <8.6.108 || >=7.0.0 <8.6.108 || >=8.0.0-alpha.1 <8.6.108 || >=3.0.0 <8.6.108 || >=2.0.0 <8.6.108 || >=8.0.0 <8.6.108 || >=5.0.0-alpha.1 <8.6.108 || >=6.0.0 <8.6.108 || >=5.0.0 <8.6.108 || >=6.0.0-alpha.1 <8.6.108 || >=7.0.0-alpha.1 <8.6.108
Fix Suggestion:
Update to version 8.6.108
Related Resources (4)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119569.json
https://nvd.nist.gov/vuln/detail/CVE-2026-119569
https://github.com/parse-community/parse-server/security/advisories/GHSA-rx55-fw4j-pvpx
https://www.vulncheck.com/advisories/parse-server-9.0.0-before-9.10.5-alpha.9-prototype-pollution-denial-of-service
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CVSS v4
Base Score:
6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Improperly Controlled Modification of Object Prototype Attributes
CWE-1321
EPSS
Base Score:
0.38