Common Weakness Enumeration
Browse CWEs ranked by the number of vulnerabilities referencing them, and pivot to weakness details, mitigations, and related attack patterns.
345 CWEs ranked in 2026-06
API response| CWE | Name | Mapping usage | Occurrences |
|---|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | Allowed | 1010 |
| CWE-416 | Use After Free | Allowed | 598 |
| CWE-122 | Heap-based Buffer Overflow | Allowed | 427 |
| CWE-89 | Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') | Allowed | 420 |
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | Allowed-with-Review | 409 |
| CWE-125 | Out-of-bounds Read | Allowed | 391 |
| CWE-862 | Missing Authorization | Allowed-with-Review | 390 |
| CWE-400 | Uncontrolled Resource Consumption | Discouraged | 322 |
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | Discouraged | 259 |
| CWE-770 | Allocation of Resources Without Limits or Throttling | Allowed | 257 |
| CWE-502 | Deserialization of Untrusted Data | Allowed | 244 |
| CWE-918 | Server-Side Request Forgery (SSRF) | Allowed | 242 |
| CWE-787 | Out-of-bounds Write | Allowed-with-Review | 235 |
| CWE-284 | Improper Access Control | Discouraged | 229 |
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | Allowed | 228 |
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | Allowed-with-Review | 226 |
| CWE-20 | Improper Input Validation | Discouraged | 222 |
| CWE-74 | Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | Discouraged | 212 |
| CWE-121 | Stack-based Buffer Overflow | Allowed | 204 |
| CWE-639 | Authorization Bypass Through User-Controlled Key | Allowed | 197 |
| CWE-190 | Integer Overflow or Wraparound | Allowed | 190 |
| CWE-863 | Incorrect Authorization | Allowed-with-Review | 169 |
| CWE-362 | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | Allowed-with-Review | 165 |
| CWE-306 | Missing Authentication for Critical Function | Allowed | 154 |
| CWE-59 | Improper Link Resolution Before File Access ('Link Following') | Allowed | 137 |
| CWE-287 | Improper Authentication | Discouraged | 127 |
| CWE-285 | Improper Authorization | Discouraged | 123 |
| CWE-693 | Protection Mechanism Failure | Discouraged | 118 |
| CWE-1321 | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') | Allowed | 106 |
| CWE-98 | Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') | Allowed | 104 |
| CWE-266 | Incorrect Privilege Assignment | Allowed | 99 |
| CWE-434 | Unrestricted Upload of File with Dangerous Type | Allowed | 92 |
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | Allowed-with-Review | 91 |
| CWE-352 | Cross-Site Request Forgery (CSRF) | Allowed | 77 |
| CWE-126 | Buffer Over-read | Allowed | 75 |
| CWE-191 | Integer Underflow (Wrap or Wraparound) | Allowed | 74 |
| CWE-476 | NULL Pointer Dereference | Allowed | 71 |
| CWE-93 | Improper Neutralization of CRLF Sequences ('CRLF Injection') | Allowed | 69 |
| CWE-88 | Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') | Allowed | 69 |
| CWE-201 | Insertion of Sensitive Information Into Sent Data | Allowed | 69 |
| CWE-601 | URL Redirection to Untrusted Site ('Open Redirect') | Allowed | 63 |
| CWE-345 | Insufficient Verification of Data Authenticity | Discouraged | 63 |
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | Discouraged | 62 |
| CWE-367 | Time-of-check Time-of-use (TOCTOU) Race Condition | Allowed | 61 |
| CWE-15 | External Control of System or Configuration Setting | Allowed | 61 |
| CWE-401 | Missing Release of Memory after Effective Lifetime | Allowed | 58 |
| CWE-347 | Improper Verification of Cryptographic Signature | Allowed | 58 |
| CWE-295 | Improper Certificate Validation | Allowed | 58 |
| CWE-843 | Access of Resource Using Incompatible Type ('Type Confusion') | Allowed | 54 |
| CWE-73 | External Control of File Name or Path | Allowed | 51 |