Description
Apollo Server is an open-source, spec-compliant GraphQL server that's compatible with any GraphQL client, including Apollo Client. In versions from 2.0.0 to 3.13.0, 4.2.0 to before 4.13.0, and 5.0.0 to before 5.4.0, the default configuration of startStandaloneServer from @apollo/server/standalone is vulnerable to denial of service (DoS) attacks through specially crafted request bodies with exotic character set encodings. This issue does not affect users that use @apollo/server as a dependency for integration packages, like @as-integrations/express5 or @as-integrations/next, only direct usage of startStandaloneServer.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- apollographql / apollo-server>= 2.0.0, <= 3.13.0 – >= 2.0.0, <= 3.13.0
- apollographql / apollo-server>= 4.2.0, < 4.13.0 – >= 4.2.0, < 4.13.0
- apollographql / apollo-server>= 5.0.0, < 5.4.0 – >= 5.0.0, < 5.4.0