Parse Server has a rate limit bypass via batch request endpoint
Priority LOW 37CWE-799Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.
Summary
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior o 9.5.2-alpha.10 and 8.6.23, Parse Server's rate limiting middleware is applied at the Express middleware layer, but the batch request endpoint (/batch) processes sub-requests internally by routing them directly through the Promise router, bypassing Express middleware including rate limiting. An attacker can bundle multiple requests targeting a rate-limited endpoint into a single batch request to circumvent the configured rate limit. Any Parse Server deployment that relies on the built-in rate limiting feature is affected. This vulnerability is fixed in 9.5.2-alpha.10 and 8.6.23.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00397 34th percentileScored 2026-11-07
Fix Fixed parse-server (parse-community): 8.6.23parse-server (npm): 9.5.2-alpha.10, 8.6.23
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| parse-community | parse-server | >= 9.0.0 < 9.5.2-alpha.10; before 8.6.23 | 8.6.23 | Patch available | CNA |
| — | parse-server (npm) | 9.0.0-alpha.1 to before 9.5.2-alpha.10 | 9.5.2-alpha.10 | Patch available | GHSA-775h-3xrc-c228 |
| — | parse-server (npm) | before 8.6.23 | 8.6.23 | Patch available | GHSA-775h-3xrc-c228 |
- parse-server Vendorparse-community Affected >= 9.0.0 < 9.5.2-alpha.10; before 8.6.23 Fixed in 8.6.23 Patch available CNA
- parse-server (npm) Vendor— Affected 9.0.0-alpha.1 to before 9.5.2-alpha.10 Fixed in 9.5.2-alpha.10 Patch available GHSA-775h-3xrc-c228
- parse-server (npm) Vendor— Affected before 8.6.23 Fixed in 8.6.23 Patch available GHSA-775h-3xrc-c228
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* | before 8.6.23; 9.0.0 to before 9.5.2 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha1:*:*:*:node.js:*:* | 9.5.2 alpha1 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha2:*:*:*:node.js:*:* | 9.5.2 alpha2 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha3:*:*:*:node.js:*:* | 9.5.2 alpha3 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha4:*:*:*:node.js:*:* | 9.5.2 alpha4 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha5:*:*:*:node.js:*:* | 9.5.2 alpha5 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha6:*:*:*:node.js:*:* | 9.5.2 alpha6 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha7:*:*:*:node.js:*:* | 9.5.2 alpha7 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha8:*:*:*:node.js:*:* | 9.5.2 alpha8 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha9:*:*:*:node.js:*:* | 9.5.2 alpha9 | Vulnerable | parse-community |
- cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* Versions before 8.6.23; 9.0.0 to before 9.5.2 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha1:*:*:*:node.js:*:* Versions 9.5.2 alpha1 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha2:*:*:*:node.js:*:* Versions 9.5.2 alpha2 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha3:*:*:*:node.js:*:* Versions 9.5.2 alpha3 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha4:*:*:*:node.js:*:* Versions 9.5.2 alpha4 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha5:*:*:*:node.js:*:* Versions 9.5.2 alpha5 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha6:*:*:*:node.js:*:* Versions 9.5.2 alpha6 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha7:*:*:*:node.js:*:* Versions 9.5.2 alpha7 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha8:*:*:*:node.js:*:* Versions 9.5.2 alpha8 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha9:*:*:*:node.js:*:* Versions 9.5.2 alpha9 Vulnerable ·parse-community
Remediation
- Fix · CNA parse-server (parse-community) Fixed in 8.6.23
- Fix · GHSA-775h-3xrc-c228 parse-server (npm) Fixed in 9.5.2-alpha.10 Advisory →
- Fix · GHSA-775h-3xrc-c228 parse-server (npm) Fixed in 8.6.23 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-30972
- 2026-10-03 Alias added: GHSA-775h-3xrc-c228
References
More parse-community Parse-server vulnerabilities
- TI-2022-08574 Command Injection in Parse server CVSS 3.1CRITICAL 10.0
- TI-2024-18136 Parse Server literalizeRegexPart SQL Injection CVSS 3.1CRITICAL 10.0
- TI-2022-18768 Parse Server vulnerable to Remote Code Execution via prototype pollution in MongoDB BSON parser CVSS 3.1CRITICAL 9.8
- TI-2024-31550 Parse Server's custom object ID allows to acquire role privileges CVSS 3.1HIGH 8.1
- TI-2023-18316 Parse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollution CVSS 3.1CRITICAL 9.8
- TI-2026-23790 Parse Server session token exfiltration via `redirectClassNameForKey` query parameter CVSS 4.0CRITICAL 9.9
Sources
- CVE-2026-30972 · CVE Program
- CVE-2026-30972 · NVD
- FIRST EPSS
- GHSA-775h-3xrc-c228 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences