CVE-2026-30854 - Parse Server: GraphQL `__type` introspection bypass via inline fragments when public introspection is disabled
CVE ID :CVE-2026-30854
Published : March 7, 2026, 5:15 p.m. | 4 hours, 11 minutes ago
Description :Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. From version 9.3.1-alpha.3 to before version 9.5.0-alpha.10, when graphQLPublicIntrospection is disabled, __type queries nested inside inline fragments (e.g. ... on Query { __type(name:"User") { name } }) bypass the introspection control, allowing unauthenticated users to perform type reconnaissance. __schema introspection is not affected. This issue has been patched in version 9.5.0-alpha.10.
Severity: 6.9 | MEDIUM
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Published : March 7, 2026, 5:15 p.m. | 4 hours, 11 minutes ago
Description :Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. From version 9.3.1-alpha.3 to before version 9.5.0-alpha.10, when graphQLPublicIntrospection is disabled, __type queries nested inside inline fragments (e.g. ... on Query { __type(name:"User") { name } }) bypass the introspection control, allowing unauthenticated users to perform type reconnaissance. __schema introspection is not affected. This issue has been patched in version 9.5.0-alpha.10.
Severity: 6.9 | MEDIUM
Visit the link for more details, such as CVSS details, affected products, timeline, and more...