CVE-2026-30939
HIGH EPSS 38.4%
Published Mar 10, 20263mo ago · Modified Jun 17, 20262w ago
8.8 CVSS 4.0
Published Mar 10, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
38.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-1321
Affected Products 3
| Vendor | Product | Version | Range |
|---|---|---|---|
| parseplatform | parse-server | * | <8.6.13 |
| parseplatform | parse-server | * | ≥9.0.0 – <9.5.1 |
| parseplatform | parse-server | 9.5.1 | any |
References 3
- github.com https://github.com/parse-community/parse-server/releases/tag/8.6.13
- github.com https://github.com/parse-community/parse-server/releases/tag/9.5.1-alpha.2
- github.com https://github.com/parse-community/parse-server/security/advisories/GHSA-5j86-7r7m-p8h6
Remediation
- github.com https://github.com/parse-community/parse-server/security/advisories/GHSA-5j86-7r7m-p8h6