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Security Advisories

CVE-2026-18503

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-18503

Severity

Unknown
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Summary

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

Description

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().

References

Affected packages

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