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CVE-2020-15270

Improper session expiration in Parse Server

MEDIUM
4.3
CVSS Score
Published: October 22, 2020 at 09:25 PM UTC
Updated: June 17, 2026 at 02:56 AM UTC
2 products affected across 2 vendorsParse ServerParse Server

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Severity
MEDIUM4.3
Exploit prediction
EPSS 1%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/parse-community/parse-server/commit/78b59fb26b1c36e3cdbd42ba9fec025003267f58
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/parse-community/parse-server/security/advisories/GHSA-2xm2-xj2q-qgpj
x_refsource_MISCProductThird Party Advisory
Source: [email protected]
https://npmjs.com/parse-server

CVSS

4.3MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-672

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