Crash server with query parameter
Priority LOW 36CWE-74Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · 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 to version 4.10.3, Parse Server crashes when if a query request contains an invalid value for the `explain` option. This is due to a bug in the MongoDB Node.js driver which throws an exception that Parse Server cannot catch. There is a patch for this issue in version 4.10.3. No workarounds aside from upgrading are known to exist.
Why it matters now
EPSS 0.01819 78th percentileScored 2026-11-07
Fix Fixed parse-server (parse-community): 4.10.3parse-server (npm): 4.10.3
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| parse-community | parse-server | before 4.10.3 | 4.10.3 | Patch available | CNA |
| — | parse-server (npm) | before 4.10.3 | 4.10.3 | Patch available | GHSA-xqp8-w826-hh6x |
- parse-server Vendorparse-community Affected before 4.10.3 Fixed in 4.10.3 Patch available CNA
- parse-server (npm) Vendor— Affected before 4.10.3 Fixed in 4.10.3 Patch available GHSA-xqp8-w826-hh6x
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* | before 4.10.3 | Vulnerable | parse-community |
- cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* Versions before 4.10.3 Vulnerable ·parse-community
Remediation
- Fix · CNA parse-server (parse-community) Fixed in 4.10.3
- Fix · GHSA-xqp8-w826-hh6x parse-server (npm) Fixed in 4.10.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-39187
- 2026-10-03 Alias added: GHSA-xqp8-w826-hh6x
References
Patch 2
Advisory 3
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-2021-39187 · CVE Program
- CVE-2021-39187 · NVD
- FIRST EPSS
- GHSA-xqp8-w826-hh6x · 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