CVE-2026-18503 Super-linear CPU usage for unbounded input to csv.Sniffer.sniff()

Attacker-controlled CSV samples can trigger super-linear regular-expression work during dialect sniffing and consume significant CPU when applications pass unbounded input to csv.Sniffer.sniff...

CVE-2026-18503

Attacker-controlled CSV samples can trigger super-linear regular-expression work during dialect sniffing and consume significant CPU when applications pass unbounded input to csv.Sniffer.sniff...

PT-2026-69842

Name of the Vulnerable Software and Affected Versions Python affected versions not specified Description Attacker-controlled CSV samples can trigger super-linear regular-expression work during dialect sniffing, leading to significant CPU consumption when applications pass unbounded input to the...