What’s Vulnerable › Vulnerabilities

CVE-2020-15126: Information disclosure through Viewer query in parse-server

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-07-22 · updated 2026-06-17
• Weakness: CWE-863

Description

In parser-server from version 3.5.0 and before 4.3.0, an authenticated user using the viewer GraphQL query can by pass all read security on his User object and can also by pass all objects linked via relation or Pointer on his User object.

Affected products

• Parseplatform Parse Server: from 3.5.0 before 4.3.0 — fixed in 4.3.0

How to fix

Upgrade to a fixed version: Parseplatform Parse Server 4.3.0. Check the vendor advisory for mitigations.

References

• https://github.com/parse-community/parse-server/blob/master/CHANGELOG.md#430
• https://github.com/parse-community/parse-server/commit/78239ac9071167fdf243c55ae4bc9a2c0b0d89aa
• https://github.com/parse-community/parse-server/security/advisories/GHSA-236h-rqv8-8q73
• https://github.com/parse-community/parse-server/blob/master/CHANGELOG.md#430
• https://github.com/parse-community/parse-server/commit/78239ac9071167fdf243c55ae4bc9a2c0b0d89aa
• https://github.com/parse-community/parse-server/security/advisories/GHSA-236h-rqv8-8q73

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