Weakness · High

CWE-698: Execution After Redirect (EAR)

What it is

The web application sends a redirect to another location, but instead of exiting, it executes additional code.

MITRE CWE 4.19.1

Severity (our rating)
High
Likelihood of exploit
Not rated by MITRE
Introduced during
Implementation
Exploited in the wild
No CVE in CISA's catalog

What an attacker can do

  • Alter Execution Logic (Other, Confidentiality, Integrity, Availability)
  • Execute Unauthorized Code or Commands (Other, Confidentiality, Integrity, Availability)

How to prevent it

MITRE lists no specific mitigation for this weakness. Treat it like its parent weaknesses below: validate input, keep the design simple and review the code where it could appear.

How to find it

  • Black Box. This issue might not be detected if testing is performed using a web browser, because the browser might obey the redirect and move the user to a different page before the application has produced outputs that indicate something is amiss.

CWE-698 on MITRE's CWE site

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Source: MITRE Common Weakness Enumeration, CWE version 4.19.1. CWE is a trademark of The MITRE Corporation.