Improper session expiration in Parse Server
Priority LOW 22CWE-672Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
Parse Server (npm package parse-server) broadcasts events to all clients without checking if the session token is valid. This allows clients with expired sessions to still receive subscription objects. It is not possible to create subscription objects with invalid session tokens. The issue is not patched.
Why it matters now
EPSS 0.01165 67th percentileScored 2026-11-07
Fix Fixed parse-server (npm): 4.4.0
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 | up to 4.3.0 | — | No fix listed | CNA |
| — | parse-server (npm) | before 4.4.0 | 4.4.0 | Patch available | GHSA-2xm2-xj2q-qgpj |
- parse-server Vendorparse-community Affected up to 4.3.0 Fixed in — No fix listed CNA
- parse-server (npm) Vendor— Affected before 4.4.0 Fixed in 4.4.0 Patch available GHSA-2xm2-xj2q-qgpj
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* | up to 4.3.0 | Vulnerable | parse-community |
- cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* Versions up to 4.3.0 Vulnerable ·parse-community
Remediation
- Fix · GHSA-2xm2-xj2q-qgpj parse-server (npm) Fixed in 4.4.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2020-15270
- 2026-10-03 Alias added: GHSA-2xm2-xj2q-qgpj
References
Patch 1
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-2020-15270 · CVE Program
- CVE-2020-15270 · NVD
- FIRST EPSS
- GHSA-2xm2-xj2q-qgpj · 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