Home/CWE/Insertion of Sensitive Information Into Sent Data
Weakness

Insertion of Sensitive Information Into Sent Data

CWE-201 · Base · Draft

The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.

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Weakness Relationships

Where this weakness sits in the CWE hierarchy. Walk up to broader classes or down to more specific variants.
Parent of this (broader)
ChildOfCWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Children (more specific)
ParentOfCWE-598 · Use of HTTP Request With Sensitive Query String
Related
CanAlsoBeCWE-202 · Exposure of Sensitive Information Through Data Queries
CanAlsoBeCWE-209 · Generation of Error Message Containing Sensitive Information
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Attack Patterns (CAPEC)

9
How adversaries exploit this weakness, per MITRE CAPEC.
CAPEC-12Choosing Message Identifier
CAPEC-217Exploiting Incorrectly Configured SSL/TLS
CAPEC-612WiFi MAC Address Tracking
CAPEC-613WiFi SSID Tracking
CAPEC-618Cellular Broadcast Message Request
CAPEC-619Signal Strength Tracking
CAPEC-621Analysis of Packet Timing and Sizes
CAPEC-622Electromagnetic Side-Channel Attack
CAPEC-623Compromising Emanations Attack
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CVEs With This Weakness

300
A sample of the 300 CVEs tagged with this weakness.
CVECVE-2026-5512
CVECVE-2026-5483
CVECVE-2026-4927
CVECVE-2026-4525
CVECVE-2026-45215
CVECVE-2026-42379
CVECVE-2026-42042
CVECVE-2026-41181
CVECVE-2026-40161
CVECVE-2026-39912
CVECVE-2026-39711
CVECVE-2026-39709
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Nuclei Scanner Templates

1
Open-source Nuclei templates that detect this weakness class - an actionable scan-for-it pivot. Licensed under the ProjectDiscovery / Nuclei terms.
highLightdash v0.1024.6 - Server-Side Request Forgery
External lookups - second-class, for what we don’t hold ourselves
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