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Common Weakness Enumeration

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ID

CWE CATEGORY: DEPRECATED: Cleansing, Canonicalization, and Comparison Errors

Category ID: 171
Vulnerability Mapping: PROHIBITED This CWE ID must not be used to map to real-world vulnerabilities
+ Summary
This entry has been deprecated. It was originally used for organizing the Development View (CWE-699) and some other views, but it introduced unnecessary complexity and depth to the resulting tree. Weaknesses in this category were related to improper handling of data within protection mechanisms that attempt to perform neutralization for untrusted data. These weaknesses can be found in other similar categories.
+ Vulnerability Mapping Notes

Usage: PROHIBITED

(this CWE ID must not be used to map to real-world vulnerabilities)

Reasons: Category, Deprecated

Rationale:

This CWE has been deprecated. It is also a Category. Using categories for mapping has been discouraged since 2019. Categories are informal organizational groupings of weaknesses that can help CWE users with data aggregation, navigation, and browsing. However, they are not weaknesses in themselves.

Comments:

See the summary, which might have suggestions for other CWEs to consider.
+ Content History
+ Submissions
Submission Date Submitter Organization
2006-07-19
(CWE Draft 3, 2006-07-19) 		PLOVER
+ Modifications
Modification Date Modifier Organization
2023-06-29
(CWE 4.12, 2023-06-29) 		CWE Content Team MITRE
updated Mapping_Notes
2021-07-20
(CWE 4.5, 2021-07-20) 		CWE Content Team MITRE
updated References
2021-03-15
(CWE 4.4, 2021-03-15) 		CWE Content Team MITRE
updated Taxonomy_Mappings
2020-02-24
(CWE 4.0, 2020-02-24) 		CWE Content Team MITRE
updated Description, Name, Relationships, Type
2019-06-20
(CWE 3.3, 2019-06-20) 		CWE Content Team MITRE
updated Relationships
2019-01-03
(CWE 3.2, 2019-01-03) 		CWE Content Team MITRE
updated Relationships, Taxonomy_Mappings
2018-03-27
(CWE 3.1, 2018-03-27) 		CWE Content Team MITRE
updated References, Relationships
2017-11-08
(CWE 3.0, 2017-11-08) 		CWE Content Team MITRE
updated Applicable_Platforms, References, Related_Attack_Patterns, Relationships
2017-01-19
(CWE 2.10, 2017-01-19) 		CWE Content Team MITRE
updated Relationships
2015-12-07
(CWE 2.9, 2015-12-07) 		CWE Content Team MITRE
updated Relationships
2013-02-21
(CWE 2.4, 2013-02-21) 		CWE Content Team MITRE
updated Potential_Mitigations
2012-10-30
(CWE 2.3, 2012-10-30) 		CWE Content Team MITRE
updated Potential_Mitigations
2012-05-11
(CWE 2.2, 2012-05-15) 		CWE Content Team MITRE
updated References, Related_Attack_Patterns, Taxonomy_Mappings
2011-06-01
(CWE 1.13, 2011-06-01) 		CWE Content Team MITRE
updated Description, Relationships, Taxonomy_Mappings
2009-12-28
(CWE 1.7, 2009-12-28) 		CWE Content Team MITRE
updated Applicable_Platforms
2009-05-27
(CWE 1.4, 2009-05-27) 		CWE Content Team MITRE
updated Relationships
2008-09-08
(CWE 1.0, 2008-09-09) 		CWE Content Team MITRE
updated Relationships, Taxonomy_Mappings
+ Previous Entry Names
Change Date Previous Entry Name
2020-02-24 Cleansing, Canonicalization, and Comparison Errors
Page Last Updated: April 30, 2026
 

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