Base weakness
Incomplete
CWE-179: Incorrect Behavior Order: Early Validation
The product validates input before applying protection mechanisms that modify the input, which could allow an attacker to bypass the validation via dangerous inputs that only arise after the modification.
Last updated
3
Recorded CVEs
With this primary weakness
0
KEVs
In the CISA KEV catalog
Not rated
Likelihood of exploit
Per MITRE
Base
Abstraction
MITRE classification
Overview
Product needs to validate data at the proper time, after data has been canonicalized and cleansed. Early validation is susceptible to various manipulations that result in dangerous inputs that are produced by canonicalization and cleansing.
Real-world CVEs
3 recorded CVEs are caused by CWE-179 (Incorrect Behavior Order: Early Validation). The highest-severity and most recent are shown first. 1 new CWE-179 CVE has been recorded so far in 2026.
Common consequences
What can happen when CWE-179 is exploited.