Weakness · High
CWE-181: Incorrect Behavior Order: Validate Before Filter
What it is
The product validates data before it has been filtered, which prevents the product from detecting data that becomes invalid after the filtering step.
- Severity (our rating)
- High
- Likelihood of exploit
- Not rated by MITRE
- Introduced during
- Implementation
- Exploited in the wild
- No CVE in CISA's catalog
In more detail
This can be used by an attacker to bypass the validation and launch attacks that expose weaknesses that would otherwise be prevented, such as injection.
What an attacker can do
- Bypass Protection Mechanism (Access Control)
How to prevent it
Implementation
- Inputs should be decoded and canonicalized to the application's current internal representation before being filtered.
H2 Security
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Start freeSource: MITRE Common Weakness Enumeration, CWE version 4.19.1. CWE is a trademark of The MITRE Corporation.