CVE-2026-18503 Super-linear CPU usage for unbounded input to csv.Sniffer.sniff()
| Reporter | Title | Published | Views | Family All 54 |
|---|---|---|---|---|
 | CVE-2026-18503 | 10 Aug 202613:45 | – | attackerkb |
 | Low: python3.14 | 31 Aug 202600:00 | – | amazon |
| Low: python3.13 | 31 Aug 202600:00 | – | amazon |
| Low: python3.12 | 31 Aug 202600:00 | – | amazon |
| Low: python3.11 | 31 Aug 202600:00 | – | amazon |
 | CVE-2026-18503 affecting package python3 for versions less than 3.12.14-1 | 20 Aug 202600:39 | – | cbl_mariner |
 | CVE-2026-18503 vulnerabilities | 15 Aug 202602:17 | – | cgr |
 | CVE-2026-18503 | 11 Aug 202613:30 | – | circl |
 | CVE-2026-18503 | 10 Aug 202613:45 | – | cve |
 | CVE-2026-18503 | 10 Aug 202613:45 | – | debiancve |
10
[
{
"defaultStatus": "unaffected",
"modules": [
"csv"
],
"product": "CPython",
"repo": "https://github.com/python/cpython",
"vendor": "Python Software Foundation",
"versions": [
{
"version": "0",
"lessThan": "3.10.21",
"status": "affected",
"versionType": "python"
},
{
"version": "3.11.0",
"lessThan": "3.11.16",
"status": "affected",
"versionType": "python"
},
{
"version": "3.12.0",
"lessThan": "3.12.14",
"status": "affected",
"versionType": "python"
},
{
"version": "3.13.0",
"lessThan": "3.13.15",
"status": "affected",
"versionType": "python"
},
{
"version": "3.14.0",
"lessThan": "3.14.7",
"status": "affected",
"versionType": "python"
},
{
"version": "3.15.0a1",
"lessThan": "3.15.0rc1",
"status": "affected",
"versionType": "python"
}
]
}
]Data
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13 Aug 2026 00:28Current
CVSS 42.4
EPSS0.00119