Lucene search
+L

CVE-2026-18503

🗓️ 10 Aug 2026 13:45:31Reported by PSFType 
cve
 cve
🔗 web.nvd.nist.gov👁 152 Views

CVE-2026-18503: Unbounded input to csv.Sniffer.sniff() causes super-linear CPU via regex work.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-18503
10 Aug 202613:45
attackerkb
amazon
Amazon
Low: python3.14
31 Aug 202600:00
amazon
amazon
Amazon
Low: python3.13
31 Aug 202600:00
amazon
amazon
Amazon
Low: python3.12
31 Aug 202600:00
amazon
amazon
Amazon
Low: python3.11
31 Aug 202600:00
amazon
cbl_mariner
CBLMariner
CVE-2026-18503 affecting package python3 for versions less than 3.12.14-1
20 Aug 202600:39
cbl_mariner
cgr
Chainguard
CVE-2026-18503 vulnerabilities
15 Aug 202602:17
cgr
circl
Circl
CVE-2026-18503
11 Aug 202613:30
circl
cvelist
Cvelist
CVE-2026-18503 Super-linear CPU usage for unbounded input to csv.Sniffer.sniff()
10 Aug 202613:45
cvelist
debiancve
Debian CVE
CVE-2026-18503
10 Aug 202613:45
debiancve
Rows per page
[
  {
    "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

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

18 Aug 2026 15:04Current
5.2Medium risk
Vulners AI Score5.2
CVSS 42.4
EPSS0.00119
SSVC
152