CWE-462 (Duplicate Key in Associative List (Alist)) documents a weakness type used across vulnerability databases and security assessments. Use the sections below for definition, context, and mapped CVEs.
Duplicate keys in associative lists can lead to non-unique keys being mistaken for an error.
| Kind | Name | Class | Prevalence | OS / CPE |
|---|---|---|---|---|
| language | C | — | Undetermined | — |
| language | C++ | — | Undetermined | — |
| language | Java | — | Undetermined | — |
| language | C# | — | Undetermined | — |
These CVEs are mapped to this weakness in this database and kept for traceability and search.
| CVE | Published | Summary |
|---|---|---|
| CVE-2025-21085 | 2025-06-15 | PingFederate OAuth2 grant duplication in PostgreSQL persistent storage allows OAuth2 requests to use excessive memory utilization. |
| Date | Name | Version | Importance | Comment |
|---|---|---|---|---|
| 2008-07-01 | Eric Dalci | 1.0 | — | updated Time_of_Introduction |
| 2008-09-08 | CWE Content Team | 1.0 | — | updated Applicable_Platforms, Relationships, Other_Notes, Taxonomy_Mappings |
| 2008-11-24 | CWE Content Team | 1.1 | — | updated Relationships, Taxonomy_Mappings |
| 2009-10-29 | CWE Content Team | 1.6 | — | updated Demonstrative_Examples, Description, Other_Notes |
| 2011-06-01 | CWE Content Team | 1.13 | — | updated Common_Consequences |
| 2011-06-27 | CWE Content Team | 2.0 | — | updated Common_Consequences |
| 2011-09-13 | CWE Content Team | 2.1 | — | updated Relationships, Taxonomy_Mappings |
| 2012-05-11 | CWE Content Team | 2.2 | — | updated Relationships |
| 2014-07-30 | CWE Content Team | 2.8 | — | updated Relationships |
| 2017-11-08 | CWE Content Team | 3.0 | — | updated Taxonomy_Mappings |
| 2020-02-24 | CWE Content Team | 4.0 | — | updated References, Relationships |
| 2023-04-27 | CWE Content Team | 4.11 | — | updated Relationships, Time_of_Introduction, Type |
| 2023-06-29 | CWE Content Team | 4.12 | — | updated Mapping_Notes |
| 2025-12-11 | CWE Content Team | 4.19 | — | updated Weakness_Ordinalities |