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GHSA-q5q9-2rhp-33qw

MediumCVSS 6.9 / 10
Published Mar 9, 2026·Last modified Mar 16, 2026
Affected Components(0)

No affected components available

Description

Impact

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.

Patches

The check was changed from a flat iteration over root-level selections to a recursive walk of all selection sets, detecting __type inside inline fragments at any depth.

Workarounds

Require master key authentication at the network layer (e.g. reverse proxy) for the GraphQL endpoint.

References

  • GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-q5q9-2rhp-33qw
  • Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.10
Risk Scores
Base Score
6.9

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence
2.7

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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