Weakness (CWE)

CWE-777: Regular Expression without Anchors

Variant Incomplete

The product uses a regular expression to perform neutralization, but the regular expression omits one or more anchors that may allow malicious or malformed data to slip through.

How to prevent it (1 mitigation)

Implementation

Be sure to understand both what will be matched and what will not be matched by a regular expression. Anchoring the ends of the expression will allow the programmer to define an allowlist strictly limited to what is matched by the text in the regular expression. If you are using a package that only matches one line by default, ensure that you can match multi-line inputs if necessary.

Source: MITRE CWE-777

All Critical High Medium Low Exploited only Public exploit

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