Is CVE-2026-30939 actively exploited?

No active exploitation of CVE-2026-30939 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-30939 be exploited remotely?

Yes. CVE-2026-30939 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-30939?

CVE-2026-30939 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2026-30939

CWE-1321Published: March 10, 2026· Updated: Mar 11, 2026

7.5

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:19.1th

Official Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.13 and 9.5.1-alpha.2, an unauthenticated attacker can crash the Parse Server process by calling a Cloud Function endpoint with a prototype property name as the function name. The server recurses infinitely, causing a call stack size error that terminates the process. Other prototype property names bypass Cloud Function dispatch validation and return HTTP 200 responses, even though no such Cloud Functions are defined. The same applies to dot-notation traversal. All Parse Server deployments that expose the Cloud Function endpoint are affected. This vulnerability is fixed in 8.6.13 and 9.5.1-alpha.2.

NVD Source

Technical Analysis

CVE-2026-30939 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.