CVE-2026-116165

Parse Server 9.0.0 before 9.10.4-alpha.4 Unauthenticated Class Schema Deletion on MongoDB

State: Published
Severity: 8.8 High
Published: Oct 25, 2026
Updated: Oct 29, 2026
Reserved: Oct 25, 2026

Description

Parse Server before 8.6.101 and 9.0.0 before 9.10.4-alpha.4 contains a missing authorization vulnerability on MongoDB deployments that lets clients without the master key delete the stored schema of any class. Unauthenticated attackers can send REST API delete requests targeting the internal _SCHEMA collection to remove field definitions, class-level permissions, and protected fields, exposing data to unauthorized reads and modifications.

Scores

CVSS	Score	Vector	Source
4.0	8.8 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N	VulnCheck

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
parse-serverparse-community	9.0.0 to before 9.10.4-alpha.4Affected 9.10.4-alpha.4Not affected
parse-serverparse-community	before 8.6.101Affected 8.6.101Not affected

References

GitHub Security Advisory (GHSA-qmg9-m772-5rm7)vendor-advisory
VulnCheck Advisory: Parse Server 9.0.0 before 9.10.4-alpha.4 Unauthenticated Class Schema Deletion on MongoDBthird-party-advisory

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