Vulnerability DatabaseCVE-2026-121415
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CVE-2026-121415
Published:November 03, 2026
Updated:November 04, 2026
Parse Server before 8.6.111 and 9.0.0 before 9.10.6-alpha.3 on MongoDB skips field type validation for null-valued dot notation keys, allowing sub-documents to be written beneath Pointer, Number, String, Date, or Boolean fields. Any client with write access, including unauthenticated clients where public writes are permitted, can corrupt field values, make objects unreadable via internal date fields, or break atomic operations on number fields.
Affected Packages
https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=2.0.0 <8.6.111 || >=3.0.0 <8.6.111 || >=4.0.2 <8.6.111 || >=5.0.0-alpha.1 <8.6.111 || >=5.0.0 <8.6.111 || >=6.0.0-alpha.1 <8.6.111 || >=6.0.0 <8.6.111 || >=7.0.0-alpha.1 <8.6.111 || >=7.0.0 <8.6.111 || >=8.0.0-alpha.1 <8.6.111 || >=8.0.0 <8.6.111
Fix Suggestion:
Update to version 8.6.111
https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=9.0.0-alpha.1 <9.10.6 || >=9.0.0 <9.10.6 || >=9.10.6-alpha.1 <9.10.6
Fix Suggestion:
Update to version 9.10.6
parse-server (NPM):
Affected version(s) >=5.0.0 <8.6.111 || >=2.0.0 <8.6.111 || >=3.0.0 <8.6.111 || >=6.0.0 <8.6.111 || >=7.0.0-alpha.1 <8.6.111 || >=4.0.2 <8.6.111 || >=8.0.0-alpha.1 <8.6.111 || >=6.0.0-alpha.1 <8.6.111 || >=8.0.0 <8.6.111 || >=7.0.0 <8.6.111 || >=5.0.0-alpha.1 <8.6.111
Fix Suggestion:
Update to version 8.6.111
parse-server (NPM):
Affected version(s) >=9.10.6-alpha.1 <9.10.6 || >=9.0.0-alpha.1 <9.10.6 || >=9.0.0 <9.10.6
Fix Suggestion:
Update to version 9.10.6
Related Resources (6)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121415.json
https://www.vulncheck.com/advisories/parse-server-before-8.6.111-and-9.0.0-before-9.10.6-alpha.3-field-corruption-via-null-dot-notation-key
https://nvd.nist.gov/vuln/detail/CVE-2026-121415
https://github.com/parse-community/parse-server/security/advisories/GHSA-655c-2xf3-77x9
https://github.com/parse-community/parse-server/pull/10805
https://github.com/parse-community/parse-server/pull/10804
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CVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.7
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Improper Input Validation
CWE-20
EPSS
Base Score:
0.37