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CVE-2026-18549 @fastify/multipart vulnerable to Denial of Service via aborted upload after fileSize limit

🗓️ 15 Aug 2026 13:26:53Reported by openjsType 
cvelist
 cvelist
🔗 www.cve.org👁 56 Views

@fastify/multipart 5.3.0-10.1.0 DoS via aborted upload after fileSize limit leaks temp files and hangs request handler.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-18549
15 Aug 202613:26
–attackerkb
circl
Circl
CVE-2026-18549
15 Aug 202613:30
–circl
cve
CVE
CVE-2026-18549
15 Aug 202613:26
–cve
euvd
EUVD
EUVD-2026-59759
15 Aug 202613:26
–euvd
mend
Mend
CVE-2026-18549
15 Aug 202613:26
–mend
nvd
NVD
CVE-2026-18549
15 Aug 202614:17
–nvd
ptsecurity
Positive Technologies
PT-2026-73033
15 Aug 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-18549: Uncontrolled Resource Consumption
15 Aug 202600:00
–rapid7
snyk
Snyk
Incomplete Cleanup
15 Aug 202617:33
–snyk
vulnersosv
vulnersOsv
@appweaver/core (>=1.0.8, <=1.6.1), @buildplease/apikit (>=1.0.0, <=1.0.1) +16 more potentially affected by CVE-2026-18549 via @fastify/multipart (>=10.0.0, <=10.1.0)
15 Aug 202617:33
–vulnersosv
Rows per page
[
  {
    "vendor": "@fastify/multipart",
    "product": "@fastify/multipart",
    "defaultStatus": "unaffected",
    "versions": [
      {
        "versionType": "semver",
        "status": "affected",
        "version": "5.3.0",
        "lessThan": "10.1.1"
      },
      {
        "versionType": "semver",
        "status": "unaffected",
        "version": "10.1.1"
      }
    ],
    "packageURL": "pkg:npm/@fastify/multipart"
  }
]

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15 Aug 2026 13:26Current
CVSS 3.17.5
EPSS0.00603
SSVC
56