GHSA-x4hg-hfwf-p9mw
@asymmetric-effort/nogginlessdom vulnerable to ReDoS via user-controlled regex in HTMLInputElement pattern validation
Quick fix
GHSA-x4hg-hfwf-p9mw — @asymmetric-effort/nogginlessdom: upgrade to the fixed version with the command below.
npm install @asymmetric-effort/nogginlessdom@0.0.22Details
## Summary
The `HTMLInputElement.checkValidity()` method constructed a `RegExp` directly from the user-controlled `pattern` property without any sanitization or timeout protection. This allowed an attacker to inject a regex with catastrophic backtracking, freezing the event loop.
## Fix
Fixed in commit https://github.com/asymmetric-effort/NogginLessDom/commit/25a3cbac665fae5663f8b71c073b80c3152dbe7b on `main`. Added: - Pattern length limit (1024 characters) - Nested quantifier detection (`hasNestedQuantifiers`) that rejects patterns like `(a+)+` before constructing the regex - Patterns exceeding limits are treated as non-matching (safe default)
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Affected packages
0Fixed in: 0.0.22npm install @asymmetric-effort/nogginlessdom@0.0.22