CVE-2020-36850Network attack vector

Cross-user page disclosure via shared server state

Published Jul 25, 2025 · Updated Mar 5, 2026

Information disclosure in Sitecore JSS React Sample Application 11.0.0 through 14.0.1 allows remote attackers to view another user's page content. Server-side JavaScript stores page state in global variables or singleton instances, allowing one request's state to persist into another request. No privileges or user interaction are required, but exposure is limited to sites derived from the React sample code that retain this shared-state pattern.

CVSS severity8.7
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in Sitecore JSS React Sample Application 11.0.0 through 14.0.1 allows remote attackers to view another user's page content. Server-side JavaScript stores page state in global variables or singleton instances, allowing one request's state to persist into another request. No privileges or user interaction are required, but exposure is limited to sites derived from the React sample code that retain this shared-state pattern.

The record

CVE
CVE-2020-36850
Published
Jul 25, 2025
Updated
Mar 5, 2026
Vendor
Sitecore
Product
JSS React Sample Application
Classifications
CWE-200, CAPEC-124, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.0.0 <=14.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sitecore · JSS React Sample Applicationversion=11.0.0 <=14.0.1

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CAPEC-124Shared Resource Manipulation
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo