Parse Server crash via deeply nested query condition operators
Priority MEDIUM 44CWE-674Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-674.
Summary
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.21 and 8.6.45, an unauthenticated attacker can crash the Parse Server process by sending a single request with deeply nested query condition operators. This terminates the server and denies service to all connected clients. Starting in version 9.6.0-alpha.21 and 8.6.45, a depth limit for query condition operator nesting has been added via the `requestComplexity.queryDepth` server option. The option is disabled by default to avoid a breaking change. To mitigate, upgrade and set the option to a value appropriate for your app. No known workarounds are available.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00513 43rd percentileScored 2026-11-07
Fix Fixed parse-server (parse-community): 9.6.0-alpha.21, 8.6.45parse-server (npm): 9.6.0-alpha.21, 8.6.45
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 to before 9.6.0-alpha.21; before 8.6.45 | 9.6.0-alpha.21, 8.6.45 | Patch available | CNA |
| — | parse-server (npm) | 9.0.0 to before 9.6.0-alpha.21 | 9.6.0-alpha.21 | Patch available | GHSA-9xp9-j92r-p88v |
| — | parse-server (npm) | before 8.6.45 | 8.6.45 | Patch available | GHSA-9xp9-j92r-p88v |
- parse-server Vendorparse-community Affected 9.0.0 to before 9.6.0-alpha.21; before 8.6.45 Fixed in 9.6.0-alpha.21, 8.6.45 Patch available CNA
- parse-server (npm) Vendor— Affected 9.0.0 to before 9.6.0-alpha.21 Fixed in 9.6.0-alpha.21 Patch available GHSA-9xp9-j92r-p88v
- parse-server (npm) Vendor— Affected before 8.6.45 Fixed in 8.6.45 Patch available GHSA-9xp9-j92r-p88v
CPE configurations NVD · 21
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* | before 8.6.45; 9.0.0 to before 9.6.0 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha1:*:*:*:node.js:*:* | 9.6.0 alpha1 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha10:*:*:*:node.js:*:* | 9.6.0 alpha10 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha11:*:*:*:node.js:*:* | 9.6.0 alpha11 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha12:*:*:*:node.js:*:* | 9.6.0 alpha12 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha13:*:*:*:node.js:*:* | 9.6.0 alpha13 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha14:*:*:*:node.js:*:* | 9.6.0 alpha14 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha15:*:*:*:node.js:*:* | 9.6.0 alpha15 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha16:*:*:*:node.js:*:* | 9.6.0 alpha16 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha17:*:*:*:node.js:*:* | 9.6.0 alpha17 | Vulnerable | parse-community |
- cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* Versions before 8.6.45; 9.0.0 to before 9.6.0 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha1:*:*:*:node.js:*:* Versions 9.6.0 alpha1 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha10:*:*:*:node.js:*:* Versions 9.6.0 alpha10 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha11:*:*:*:node.js:*:* Versions 9.6.0 alpha11 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha12:*:*:*:node.js:*:* Versions 9.6.0 alpha12 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha13:*:*:*:node.js:*:* Versions 9.6.0 alpha13 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha14:*:*:*:node.js:*:* Versions 9.6.0 alpha14 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha15:*:*:*:node.js:*:* Versions 9.6.0 alpha15 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha16:*:*:*:node.js:*:* Versions 9.6.0 alpha16 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha17:*:*:*:node.js:*:* Versions 9.6.0 alpha17 Vulnerable ·parse-community
Show 11 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha18:*:*:*:node.js:*:* | 9.6.0 alpha18 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha19:*:*:*:node.js:*:* | 9.6.0 alpha19 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha2:*:*:*:node.js:*:* | 9.6.0 alpha2 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha20:*:*:*:node.js:*:* | 9.6.0 alpha20 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha3:*:*:*:node.js:*:* | 9.6.0 alpha3 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha4:*:*:*:node.js:*:* | 9.6.0 alpha4 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha5:*:*:*:node.js:*:* | 9.6.0 alpha5 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha6:*:*:*:node.js:*:* | 9.6.0 alpha6 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha7:*:*:*:node.js:*:* | 9.6.0 alpha7 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha8:*:*:*:node.js:*:* | 9.6.0 alpha8 | Vulnerable | parse-community |
| cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha9:*:*:*:node.js:*:* | 9.6.0 alpha9 | Vulnerable | parse-community |
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha18:*:*:*:node.js:*:* Versions 9.6.0 alpha18 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha19:*:*:*:node.js:*:* Versions 9.6.0 alpha19 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha2:*:*:*:node.js:*:* Versions 9.6.0 alpha2 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha20:*:*:*:node.js:*:* Versions 9.6.0 alpha20 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha3:*:*:*:node.js:*:* Versions 9.6.0 alpha3 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha4:*:*:*:node.js:*:* Versions 9.6.0 alpha4 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha5:*:*:*:node.js:*:* Versions 9.6.0 alpha5 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha6:*:*:*:node.js:*:* Versions 9.6.0 alpha6 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha7:*:*:*:node.js:*:* Versions 9.6.0 alpha7 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha8:*:*:*:node.js:*:* Versions 9.6.0 alpha8 Vulnerable ·parse-community
- cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha9:*:*:*:node.js:*:* Versions 9.6.0 alpha9 Vulnerable ·parse-community
Remediation
- Fix · CNA parse-server (parse-community) Fixed in 9.6.0-alpha.21, 8.6.45
- Fix · GHSA-9xp9-j92r-p88v parse-server (npm) Fixed in 9.6.0-alpha.21 Advisory →
- Fix · GHSA-9xp9-j92r-p88v parse-server (npm) Fixed in 8.6.45 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-32944
- 2026-10-03 Alias added: GHSA-9xp9-j92r-p88v
References
Advisory 2
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-2026-32944 · CVE Program
- CVE-2026-32944 · NVD
- FIRST EPSS
- GHSA-9xp9-j92r-p88v · 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