GeezerVison — Improper input validation - Wikipedia

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Improper input validation^[1] or unchecked user input is a type of vulnerability in computer software that may be used for security exploits.^[2] This vulnerability is caused when "[t]he product does not validate or incorrectly validates input that can affect the control flow or data flow of a program."^[1]

Examples

Examples include:

See also

Input validation – Process of ensuring computer data is both correct and usefulPages displaying short descriptions of redirect targets
Common Weakness Enumeration – Catalog of software weaknesses and vulnerabilities (CWE)

References

1 2 "CWE-20: Improper Input Validation". Common Weakness Enumeration. MITRE. December 13, 2010. Retrieved February 22, 2011.
↑ Erickson, Jon (2008). Hacking: the art of exploitation. No Starch Press Series (2, illustrated ed.). Safari Books Online. ISBN 978-1-59327-144-2.

External links

"Input Validation". OWASP Cheat Sheet Series. Retrieved 2026-02-09.
"Improper Data Validation". OWASP Foundation. Retrieved 2026-02-09.

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