CVE-2026-18503 | Python up to 3.15.x csv csv.py csv.Sniffer.sniff csv injection

A vulnerability categorized as problematic has been discovered in Python up to 3.15.x. Affected is the function csv.Sniffer.sniff of the file csv.py of the component csv. Such manipulation leads to csv injection.

This vulnerability is traded as CVE-2026-18503. The attack may be launched remotely. There is no exploit available.

It is advisable to upgrade the affected component.