CWE-462 - Duplicate Key in Associative List (Alist)
- Abstraction:Variant
- Structure:Simple
- Status:Incomplete
- Release Date:2006-07-19
- Latest Modification Date:2023-06-29
Weakness Name
Duplicate Key in Associative List (Alist)
Description
Duplicate keys in associative lists can lead to non-unique keys being mistaken for an error.
A duplicate key entry -- if the alist is designed properly -- could be used as a constant time replace function. However, duplicate key entries could be inserted by mistake. Because of this ambiguity, duplicate key entries in an association list are not recommended and should not be allowed.
Common Consequences
Scope: Other
Impact: Quality Degradation, Varies by Context
Related Weaknesses
Oracle denies breach after hacker claims theft of 6 million data records
Oracle Health breach compromises patient data at US hospitals
Attackers are targeting CrushFTP vulnerability with public PoC (CVE-2025-2825)
Russian Hackers Exploit CVE-2025-26633 via MSC EvilTwin to Deploy SilentPrism and DarkWisp
CosmicSting flaw impacts 75% of Adobe Commerce, Magento sites
CrushFTP: Patch critical vulnerability ASAP! (CVE-2025-2825)
RANsacked: Over 100 Security Flaws Found in LTE and 5G Network Implementations
Employee charged with stealing unreleased movies, sharing them online
CVE-2024-20439 Cisco Smart Licensing Utility Static Credential Vulnerability
CVE-2025-2783 Google Chromium Mojo Sandbox Escape Vulnerability
CVE-2019-9874 Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability
CVE-2019-9875 Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability
CVE-2025-30154 reviewdog/action-setup GitHub Action Embedded Malicious Code Vulnerability
CVE-2025-1316 Edimax IC-7100 IP Camera OS Command Injection Vulnerability
CVE-2024-48248 NAKIVO Backup and Replication Absolute Path Traversal Vulnerability
CVE-2017-12637 SAP NetWeaver Directory Traversal Vulnerability
CVE-2025-24472 Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability