CVE-2026-53504: Python Regex Overlapping Digit Quantifiers Redos
Overlapping digit matchers (`\d+\.\?\d*` or `[\d]+\.\?[\d]*`) inside regular expressions allow ambiguous partitioning of integer inputs. When evaluated inside repeated groups, this leads to catastrophic exponential backtracking (ReDoS) on non-matching strings. Replace optional dot and trailing digits with explicit non-capturing groups such as `(?:\.\d*)?`.
Pythongreprules fetch cve-2026-53504-python-regex-overlapping-digit-quantifiers-redos --engine opengrepDescription
Overlapping digit matchers (`\d+\.\?\d*` or `[\d]+\.\?[\d]*`) inside regular expressions allow ambiguous partitioning of integer inputs. When evaluated inside repeated groups, this leads to catastrophic exponential backtracking (ReDoS) on non-matching strings. Replace optional dot and trailing digits with explicit non-capturing groups such as `(?:\.\d*)?`.
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