Parse Server has a protected fields bypass via LiveQuery subscription WHERE clause

Description

An attacker can exploit LiveQuery subscriptions to infer the values of protected fields without directly receiving them. By subscribing with a WHERE clause that references a protected field (including via dot-notation or $regex), the attacker can observe whether LiveQuery events are delivered for matching objects.

Recommendation

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

• Affected version(s): **< 8.6.35

  >= 9.0.0, < 9.6.0-alpha.9**

• Patched version(s): **8.6.35

  9.6.0-alpha.9**

References

• GHSA-j7mm-f4rv-6q6q
• CVE-2026-32098
• CWE-200
• CAPEC-310
• OWASP 2021-A1
• OWASP 2021-A6

Related Issues

• Parse Server has a protected fields bypass via logical query operators - CVE-2026-30962
• Parse Server has a protected fields bypass via dot-notation in query and sort - CVE-2026-31872
• Parse Server has a protected field change detection oracle via LiveQuery watch parameter - CVE-2026-33429
• Parse Server leaks protected fields via LiveQuery afterEvent trigger - CVE-2026-33163

Tags:

npm

parse-server