Parse Server subject to Prototype pollution via Cloud Code Webhooks
Priority MEDIUM 45CWE-1321Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. 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. In versions prior to 5.3.3 or 4.10.20, a compromised Parse Server Cloud Code Webhook target endpoint allows an attacker to use prototype pollution to bypass the Parse Server `requestKeywordDenylist` option. This issue has been patched in versions 5.3.3 and 4.10.20. There are no known workarounds.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00977 62nd percentileScored 2026-11-07
Fix Fixed parse-server (parse-community): 4.10.20, 5.3.3parse-server (npm): 4.10.20, 5.3.3
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 | before 4.10.20; 5.0.0 to before 5.3.3 | 4.10.20, 5.3.3 | Patch available | CNA |
| — | parse-server (npm) | before 4.10.20 | 4.10.20 | Patch available | GHSA-93vw-8fm5-p2jf |
| — | parse-server (npm) | 5.0.0 to before 5.3.3 | 5.3.3 | Patch available | GHSA-93vw-8fm5-p2jf |
- parse-server Vendorparse-community Affected before 4.10.20; 5.0.0 to before 5.3.3 Fixed in 4.10.20, 5.3.3 Patch available CNA
- parse-server (npm) Vendor— Affected before 4.10.20 Fixed in 4.10.20 Patch available GHSA-93vw-8fm5-p2jf
- parse-server (npm) Vendor— Affected 5.0.0 to before 5.3.3 Fixed in 5.3.3 Patch available GHSA-93vw-8fm5-p2jf
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* | before 4.10.20; 5.0.0 to before 5.3.3 | Vulnerable | parse-community |
- cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* Versions before 4.10.20; 5.0.0 to before 5.3.3 Vulnerable ·parse-community
Remediation
- Fix · CNA parse-server (parse-community) Fixed in 4.10.20, 5.3.3
- Fix · GHSA-93vw-8fm5-p2jf parse-server (npm) Fixed in 4.10.20 Advisory →
- Fix · GHSA-93vw-8fm5-p2jf parse-server (npm) Fixed in 5.3.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2022-41879
- 2026-10-03 Alias added: GHSA-93vw-8fm5-p2jf
References
Advisory 2
Other 7
- https://github.com/parse-community/parse-server/pull/8305
- https://github.com/parse-community/parse-server/pull/8306
- https://github.com/parse-community/parse-server/commit/60c5a73d257e0d536056b38bdafef8b7130524d8
- https://github.com/parse-community/parse-server/commit/6c63f04ba37174021082a5b5c4ba1556dcc954f4
- https://github.com/parse-community/parse-server
- https://github.com/parse-community/parse-server/releases/tag/4.10.20
- https://github.com/parse-community/parse-server/releases/tag/5.3.3
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-2022-41879 · CVE Program
- CVE-2022-41879 · NVD
- FIRST EPSS
- GHSA-93vw-8fm5-p2jf · 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