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CVE-2026-39820 Quadratic string concatentation in consumeComment in net/mail

🗓️ 07 May 2026 19:41:19Reported by GoType 
cvelist
 cvelist
🔗 www.cve.org👁 142 Views

CVE-2026-39820 causes CPU exhaustion from quadratic string concatenation in consumeComment.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
osv
OSV
CGA-H9C9-4F52-J96H
9 May 202600:13
osv
osv
OSV
CGA-H9G2-J28F-H6F6
9 May 202601:12
osv
osv
OSV
CGA-H9G3-CVJX-2GJ3
9 May 202601:25
osv
osv
OSV
CGA-H9GV-RHH7-M3J8
9 May 202602:10
osv
osv
OSV
CGA-H9HV-9RM5-JVF6
9 May 202601:07
osv
osv
OSV
CGA-H9Q8-V8V2-8VW7
9 May 202601:49
osv
osv
OSV
CGA-H9X5-GR92-44JM
8 May 202623:41
osv
osv
OSV
CGA-H9XP-3W37-3GMG
9 May 202613:06
osv
osv
OSV
CGA-HC27-5VWH-WJVX
8 May 202623:53
osv
osv
OSV
CGA-HC4M-H63G-9VJ2
9 May 202623:10
osv
Rows per page
[
  {
    "vendor": "Go standard library",
    "product": "net/mail",
    "collectionURL": "https://pkg.go.dev",
    "packageName": "net/mail",
    "versions": [
      {
        "version": "0",
        "lessThan": "1.25.10",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "1.26.0-0",
        "lessThan": "1.26.3",
        "status": "affected",
        "versionType": "semver"
      }
    ],
    "programRoutines": [
      {
        "name": "addrParser.consumeComment"
      },
      {
        "name": "AddressParser.Parse"
      },
      {
        "name": "AddressParser.ParseList"
      },
      {
        "name": "Header.AddressList"
      },
      {
        "name": "Header.Date"
      },
      {
        "name": "ParseAddress"
      },
      {
        "name": "ParseAddressList"
      },
      {
        "name": "ParseDate"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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