GHSA-j7mm-f4rv-6q6q

Suggest an improvement
Source
https://github.com/advisories/GHSA-j7mm-f4rv-6q6q
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-j7mm-f4rv-6q6q/GHSA-j7mm-f4rv-6q6q.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-j7mm-f4rv-6q6q
Aliases
Published
2026-03-12T14:20:02Z
Modified
2026-03-14T02:41:15Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Parse Server has a protected fields bypass via LiveQuery subscription WHERE clause
Details

Impact

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. This creates a boolean oracle that leaks protected field values. The attack affects any class that has both protectedFields configured in Class-Level Permissions and LiveQuery enabled.

Patches

The fix adds validation of the LiveQuery subscription WHERE clause against the class's protected fields, mirroring the existing REST API validation. If a subscription's WHERE clause references a protected field directly, via dot-notation, or inside $or / $and / $nor operators, the subscription is rejected with a permission error. This is applied during subscription creation, so existing event delivery paths are not affected.

Workarounds

Disable LiveQuery for classes that use protectedFields in their Class-Level Permissions, or remove protectedFields from classes that require LiveQuery.

References

Database specific
{
    "cwe_ids":  [
        "CWE-200"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-03-12T14:20:02Z",
    "nvd_published_at":  "2026-03-11T20:16:18Z",
    "severity":  "MODERATE"
}
References

Affected packages

npm / parse-server

Package

Affected ranges

Type
SEMVER
Events
Introduced
9.0.0
Fixed
9.6.0-alpha.9

Database specific

source
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-j7mm-f4rv-6q6q/GHSA-j7mm-f4rv-6q6q.json"

npm / parse-server

Package

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
8.6.35

Database specific

source
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-j7mm-f4rv-6q6q/GHSA-j7mm-f4rv-6q6q.json"