Common Weakness Enumeration
Browse CWEs ranked by the number of vulnerabilities referencing them, and pivot to weakness details, mitigations, and related attack patterns.
386 CWEs ranked in 2026-09
API response| CWE | Name | Mapping usage | Occurrences |
|---|---|---|---|
| CWE-122 | Heap-based Buffer Overflow | Allowed | 9928 |
| CWE-416 | Use After Free | Allowed | 5891 |
| CWE-125 | Out-of-bounds Read | Allowed | 5210 |
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | Allowed | 2183 |
| CWE-862 | Missing Authorization | Allowed-with-Review | 1684 |
| CWE-190 | Integer Overflow or Wraparound | Allowed | 1304 |
| CWE-121 | Stack-based Buffer Overflow | Allowed | 1272 |
| CWE-89 | Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') | Allowed | 1082 |
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | Allowed-with-Review | 977 |
| CWE-918 | Server-Side Request Forgery (SSRF) | Allowed | 877 |
| CWE-20 | Improper Input Validation | Discouraged | 853 |
| CWE-639 | Authorization Bypass Through User-Controlled Key | Allowed | 785 |
| CWE-306 | Missing Authentication for Critical Function | Allowed | 774 |
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | Allowed | 771 |
| CWE-863 | Incorrect Authorization | Allowed-with-Review | 745 |
| CWE-362 | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | Allowed-with-Review | 728 |
| CWE-908 | Use of Uninitialized Resource | Allowed | 638 |
| CWE-415 | Double Free | Allowed | 627 |
| CWE-126 | Buffer Over-read | Allowed | 608 |
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | Allowed-with-Review | 596 |
| CWE-787 | Out-of-bounds Write | Allowed-with-Review | 578 |
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | Discouraged | 563 |
| CWE-284 | Improper Access Control | Discouraged | 540 |
| CWE-74 | Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | Discouraged | 516 |
| CWE-502 | Deserialization of Untrusted Data | Allowed | 509 |
| CWE-476 | NULL Pointer Dereference | Allowed | 494 |
| CWE-770 | Allocation of Resources Without Limits or Throttling | Allowed | 491 |
| CWE-822 | Untrusted Pointer Dereference | Allowed | 464 |
| CWE-191 | Integer Underflow (Wrap or Wraparound) | Allowed | 462 |
| CWE-843 | Access of Resource Using Incompatible Type ('Type Confusion') | Allowed | 451 |
| CWE-400 | Uncontrolled Resource Consumption | Discouraged | 441 |
| CWE-59 | Improper Link Resolution Before File Access ('Link Following') | Allowed | 418 |
| CWE-287 | Improper Authentication | Discouraged | 383 |
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | Allowed-with-Review | 362 |
| CWE-269 | Improper Privilege Management | Discouraged | 322 |
| CWE-367 | Time-of-check Time-of-use (TOCTOU) Race Condition | Allowed | 310 |
| CWE-497 | Exposure of Sensitive System Information to an Unauthorized Control Sphere | Allowed | 305 |
| CWE-73 | External Control of File Name or Path | Allowed | 281 |
| CWE-285 | Improper Authorization | Discouraged | 267 |
| CWE-401 | Missing Release of Memory after Effective Lifetime | Allowed | 248 |
| CWE-352 | Cross-Site Request Forgery (CSRF) | Allowed | 241 |
| CWE-347 | Improper Verification of Cryptographic Signature | Allowed | 236 |
| CWE-197 | Numeric Truncation Error | Allowed | 230 |
| CWE-209 | Generation of Error Message Containing Sensitive Information | Allowed | 225 |
| CWE-522 | Insufficiently Protected Credentials | Allowed-with-Review | 224 |
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | Discouraged | 219 |
| CWE-434 | Unrestricted Upload of File with Dangerous Type | Allowed | 190 |
| CWE-290 | Authentication Bypass by Spoofing | Allowed | 187 |
| CWE-295 | Improper Certificate Validation | Allowed | 182 |
| CWE-693 | Protection Mechanism Failure | Discouraged | 171 |