Application Security
CWE-293 Using the Referer Header for Authentication
The Referer header is set by the client, so it proves nothing. Learn why checking it as a login or authorization step fails and what to check instead.
Oct 18, 20262 min read
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CWE-291 Reliance on IP Address for Authentication: Fix Guide
Treating a source IP as proof of identity lets attackers who can forge or reach that address walk in. Here is how the weakness works and what to use instead.
Oct 18, 20264 min read
Application Security
CWE-290 Authentication Bypass by Spoofing: IP and Header Trust
CWE-290 is authentication built on values an attacker can forge, like a source IP or a Host header. Learn why those checks fail and what to use instead.
Oct 18, 20264 min read
Application Security
CWE-29 Path Traversal with '\\..\\filename' on Windows
Filters that only watch for forward slashes miss backslash sequences on Windows. How CWE-29 works and how to close the gap.
Oct 18, 20262 min read
Application Security
CWE-289 Authentication Bypass by Alternate Name Explained
CWE-289 is checking access by name but missing the other names for the same resource. Encoded URLs and backslashes show how it works and how to fix it.
Oct 18, 20262 min read
Application Security
CWE-288 Authentication Bypass Using an Alternate Path or Channel
CWE-288 is a login that guards the front door while a side door stays open. See real examples, how to enumerate every path to a resource, and how to close them.
Oct 18, 20264 min read
Application Security
CWE-287 Improper Authentication: How Logins Fail and Fixes
CWE-287 is software that does not prove a claimed identity. Learn how real products skipped login checks and what a sound authentication design looks like.
Oct 18, 20265 min read
Application Security
CWE-286 Incorrect User Management: Wrong Group, Wrong Access
CWE-286 is mismanaging users so they land in the wrong permission group. See the observed CVEs and a short checklist for reviewing group assignment.
Oct 18, 20262 min read
Application Security
CWE-285 Improper Authorization: Missing Checks and How to Fix
CWE-285 is a missing or wrong authorization check when someone accesses a resource. See real CVEs, a code example, test steps, and a central policy fix.
Oct 18, 20266 min read
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