GraphQL: Security breach on Viewer query

Description

An authenticated user using the viewer GraphQL query can bypass all read security on his User object and can also bypass all objects linked via relation or Pointer on his User object.

Recommendation

Update the parse-server package to the latest compatible version. Followings are version details:

• Affected version(s): >= 3.5.0, < 4.3.0
• Patched version(s): 4.3.0

References

• GHSA-236h-rqv8-8q73
• CVE-2020-15126
• CWE-863
• CAPEC-310
• OWASP 2021-A1
• OWASP 2021-A6

Related Issues

• Parse Server affected by denial-of-service via unbounded query complexity in REST and GraphQL API - CVE-2026-30946
• Parse Server's GraphQL WebSocket endpoint bypasses security middleware - CVE-2026-32594
• Parse Server stores password in plain text - CVE-2020-26288
• Parse Server has a protected fields bypass via dot-notation in query and sort - CVE-2026-31872

Tags:

npm

parse-server