Base weakness
Incomplete
CWE-430: Deployment of Wrong Handler
The wrong "handler" is assigned to process an object.
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The wrong "handler" is assigned to process an object.
Last updated
An example of deploying the wrong handler would be calling a servlet to reveal source code of a .JSP file, or automatically "determining" type of the object even if it is contradictory to an explicitly specified type.
1 recorded CVEs are caused by CWE-430 (Deployment of Wrong Handler). The highest-severity and most recent are shown first. 0 new CWE-430 CVEs have been recorded so far in 2026 (1 in 2025).
What can happen when CWE-430 is exploited.
Varies by Context, Unexpected State
Affects: Integrity, Other
Typically introduced during these phases of the software lifecycle.
Practical mitigations for CWE-430, grouped by where in the lifecycle they apply.
Perform a type check before interpreting an object.
Reject any inconsistent types, such as a file with a .GIF extension that appears to consist of PHP code.
Real CVEs that MITRE cites as examples of this weakness.
CAPEC attack patterns that exploit this weakness.
Common questions about CWE-430.
The wrong "handler" is assigned to process an object.
1 recorded CVEs are attributed to CWE-430, including CVE-2025-3946.
Perform a type check before interpreting an object.
Exploiting CWE-430 can lead to: Varies by Context, Unexpected State.
1 recorded CVEs are caused by CWE-430; none are currently in CISA's KEV catalog of actively exploited flaws.
Weakness data is sourced from the MITRE CWE catalog (v4.20). CVE associations are aggregated and kept current by RadicalNotion.AI.
Get alerted the moment a new CWE-430 vulnerability affects your stack, with AI-written analysis, severity context, and remediation guidance.