CVE-2026-32098
Published: 11 March 2026
Summary
CVE-2026-32098 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor (CWE-200) vulnerability in Parseplatform Parse-Server. Its CVSS base score is 6.9 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 16.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 AC-3 (Access Enforcement) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2026-32098 is an information disclosure vulnerability (CWE-200) in Parse Server, an open source backend deployable on any Node.js-compatible infrastructure. In versions prior to 9.6.0-alpha.9 and 8.6.35, attackers can exploit LiveQuery subscriptions to infer values of protected fields without direct access. This occurs by crafting WHERE clauses in subscriptions that reference protected fields—via direct access, dot-notation, or $regex operators—and observing whether LiveQuery events are delivered for matching objects, effectively creating a boolean oracle that leaks sensitive data. The issue impacts any class configured with protectedFields in Class-Level Permissions (CLP) where LiveQuery is enabled.
The vulnerability carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N), indicating high confidentiality impact with no privileges, user interaction, or scope change required. Unauthenticated remote attackers can exploit it over the network with low complexity by establishing LiveQuery subscriptions and iteratively querying protected fields to deduce their values through event delivery patterns.
Parse Server addresses this in releases 9.6.0-alpha.9 and 8.6.35, as detailed in the project's GitHub security advisory (GHSA-j7mm-f4rv-6q6q) and corresponding release notes. Security practitioners should upgrade affected deployments to these versions to mitigate the oracle-based leakage.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-11340
Vulnerability details
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.9 and 8.6.35, an attacker can exploit LiveQuery subscriptions to infer the values of protected fields without directly receiving them.…
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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. This vulnerability is fixed in 9.6.0-alpha.9 and 8.6.35.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Remote unauthenticated exploitation of public-facing Parse Server (AV:N/PR:N) to leak protected data via LiveQuery oracle queries directly matches T1190; no other techniques are directly enabled by the described information disclosure mechanism.
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Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Remediating the specific flaw in Parse Server by upgrading to versions 9.6.0-alpha.9 or 8.6.35 directly eliminates the LiveQuery boolean oracle that leaks protected field values.
Enforces access control policies to block unauthorized inference of protected fields through LiveQuery subscriptions referencing those fields via WHERE clauses.
Establishes secure configuration settings for Class-Level Permissions and LiveQuery to prevent event delivery patterns that enable inference of protected data.