CVE-2026-18503 (GCVE-0-2026-18503)
Vulnerability from cvelistv5
Published
2026-08-10 13:45
Modified
2026-08-13 00:28
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
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
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 Version: 3.11.0 Version: 3.12.0 Version: 3.13.0 Version: 3.14.0 Version: 3.15.0a1 |
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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