Weakness (CWE)
CWE-454: External Initialization of Trusted Variables or Data Stores
The product initializes critical internal variables or data stores using inputs that can be modified by untrusted actors.
How to prevent it (2 mitigations)
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Implementation
A product system should be reluctant to trust variables that have been initialized outside of its trust boundary, especially if they are initialized by users. Ensure adequate checking (e.g. input validation) is performed when relying on input from outside a trust boundary.
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Architecture and Design
Avoid any external control of variables. If necessary, restrict the variables that can be modified using an allowlist, and use a different namespace or naming convention if possible.
Source: MITRE CWE-454
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Critical 9.1
Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header
Kirby is an open-source content management system. Prior to 4.9.4 and from 5.4.4, Kirby sites with no configured user accounts that run on publicly accessible servers behind a reverse proxy setting the Forwarded, X-Client-IP, or X-Real-IP request header could…