CWE-187 Partial String Comparison: How Prefix Matches Go Wrong
Comparing only part of a value, like a prefix or first character, can let a short password or sibling path pass. CWE-187 explained with fixes.
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Comparing only part of a value, like a prefix or first character, can let a short password or sibling path pass. CWE-187 explained with fixes.
A pattern that matches less than you intended fails to flag dangerous values. How CWE-186 works, using MITRE's /[0-8]/ example.
A regex that is not anchored, or that fails on odd input, can let spoofed values through. How CWE-185 happens and how to write validation patterns that hold.
A denylist that misses one character or path form is a bypass waiting to happen. CWE-184 explained, with recent AI platform examples and fixes.
An allowlist only protects you if everything on it is truly safe. How CWE-183 shows up in sandboxes and CI pipelines, and how to tighten it.
Removing dangerous sequences from input can collapse the remainder into a new dangerous sequence. How CWE-182 works and how to defend against it.
A filter that strips characters after validation can assemble the very pattern the check was meant to block. CWE-181 explained.
Checking a path or name before it is reduced to its canonical form lets tricks like fakechild/../realchild through. How CWE-180 works and the fix.
Validating input before canonicalizing or cleansing it lets attackers build dangerous values after the check. How CWE-179 works and how to reorder.
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