CVE-2026-30939— Parse Server has Denial of Service (DoS) and Cloud Function Dispatch Bypass via Prototype Chain Resolution
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I. Basic Information for CVE-2026-30939
Vulnerability Information
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Vulnerability Title
Parse Server has Denial of Service (DoS) and Cloud Function Dispatch Bypass via Prototype Chain Resolution
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1321
Source: NVD (National Vulnerability Database)
Vulnerability Title
Parse Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Parse Server是Parse Platform开源的一个开源后端，可以部署到任何可以运行 Node.js 的基础设施。 Parse Server 8.6.13之前版本和9.5.1-alpha.2之前版本存在安全漏洞，该漏洞源于使用原型属性名调用云函数端点可能导致无限递归，进而导致进程崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| parse-community | parse-server | < 8.6.13 | - |
II. Public POCs for CVE-2026-30939
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|---|
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- Release 8.6.13 · parse-community/parse-server · GitHubx_refsource_MISC
- Release 9.5.1-alpha.2 · parse-community/parse-server · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-30939
Same Patch Batch · parse-community · 2026-03-10 · 14 CVEs total
| CVE-2026-30966 | 10.0 CRITICAL | Parse Server role escalation and CLP bypass via direct `_Join` table write |
| CVE-2026-30941 | Parse Server has a NoSQL injection via token type in password reset and email verification | |
| CVE-2026-30938 | Parse Server has denylist `requestKeywordDenylist` keyword scan bypass through nested obje | |
| CVE-2026-30948 | Parse Server has stored cross-site scripting (XSS) via SVG file upload | |
| CVE-2026-30949 | Parse Server is missing audience validation in Keycloak authentication adapter | |
| CVE-2026-30946 | Parse Server affected by denial-of-service via unbounded query complexity in REST and Grap | |
| CVE-2026-30947 | Parse Server ha a bypass of class-level permissions in LiveQuery | |
| CVE-2026-31800 | Parse Server: Classes `_GraphQLConfig` and `_Audience` master key bypass via generic class | |
| CVE-2026-30972 | Parse Server has a rate limit bypass via batch request endpoint | |
| CVE-2026-30962 | Parse Server has a protected fields bypass via logical query operators | |
| CVE-2026-30967 | Parse Server OAuth2 authentication adapter account takeover via identity spoofing | |
| CVE-2026-30965 | Parse Server session token exfiltration via `redirectClassNameForKey` query parameter | |
| CVE-2026-31828 | Parse Server has an LDAP injection via unsanitized user input in DN and group filter const |
IV. Related Vulnerabilities
Same product: parse-server
- CVE-2026-39381
Parse Server's Endpoint `/sessions/me` bypasses `_Session` ` - CVE-2026-39321
Parse Server has a login timing side-channel reveals user ex - CVE-2026-35200
Parse Server has a file upload Content-Type override via ext - CVE-2026-34784
Parse Server: Streaming file download bypasses afterFind fil - CVE-2026-34215
Parse Server: Auth data exposed via verify password endpoint
Same vendor: parse-community
- CVE-2026-39381
Parse Server's Endpoint `/sessions/me` bypasses `_Session` ` - CVE-2026-39321
Parse Server has a login timing side-channel reveals user ex - CVE-2026-35200
Parse Server has a file upload Content-Type override via ext - CVE-2026-34784
Parse Server: Streaming file download bypasses afterFind fil - CVE-2026-34215
Parse Server: Auth data exposed via verify password endpoint
Same weakness: CWE-1321
- CVE-2026-42264
Axios: Prototype pollution read-side gadgets in HTTP adapter - CVE-2026-42232
n8n: XML Node Prototype Pollution to RCE - CVE-2026-42231
n8n: Prototype Pollution in XML Webhook Body Parser Leads to - CVE-2026-42077
Evolver: Prototype Pollution via `Object.assign()` in mailbo - CVE-2026-42033
Axios: Prototype Pollution Gadgets - Response Tampering, Dat
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