CVE-2026-66009: parse-server 9.0.0 to before 9.10.0-alpha.5, 8.2.2 to before 8.6.86

Affected technology

parse-server · 9.0.0 to before 9.10.0-alpha.5
parse-community

parse-server · 8.2.2 to before 8.6.86
parse-community

Description’s affected range: versions >= 9.0.0 before 9.10.0-alpha.5 and >= 8.2.2 before 8.6.86 return GraphQL validation error messages that name required custom input fields even when public introspection is disabled (graphQLPublicIntrospection: false

Component: Not specified by the source
Function: names

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 4.0 assessment (base score 6.3/10) rates confidentiality impact as low; integrity and availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.