🛡️ CVE-2026-30854 — parse

🟡 CVSS 5.3 — Medium ✅ No Known Exploit OSV
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Parse Server: GraphQL __type introspection bypass via inline fragments when public introspection is disabled

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

Affected software

CVE-2026-30854 is recorded against 2 packages.

  • parse
  • parse-server

Timeline and source

Published on 11 March 2026 and last revised on 13 March 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Web)

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-03-11
Updated 2026-08-12
Modified 2026-03-13
Fix URL N/A

Affected Packages

Software From version Fixed in
parse — —
parse-server — —

Similar Threats

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