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CVE-2026-56864

🗓️ 13 Aug 2026 21:58:53Reported by GoType 
cve
 cve
🔗 web.nvd.nist.gov👁 126 Views

Malicious GOSUMDB served undetected module content bypassing transparency log verification.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
osv
OSV
CGA-MHPM-7QWJ-9XQH
14 Aug 202612:29
osv
osv
OSV
CGA-MHPQ-CQ3X-V6FJ
14 Aug 202604:22
osv
osv
OSV
CGA-MJ4C-GV79-H38R
19 Aug 202613:31
osv
osv
OSV
CGA-MJ5C-8P8J-H9GR
2 Sep 202621:59
osv
osv
OSV
CGA-MJ7P-5CC3-44WM
14 Aug 202612:28
osv
osv
OSV
CGA-MJ9C-JF28-VFHF
14 Aug 202611:59
osv
osv
OSV
CGA-MJ9F-6P9F-QV2X
14 Aug 202603:47
osv
osv
OSV
CGA-MJF7-84MH-H3QC
14 Aug 202612:35
osv
osv
OSV
CGA-MJG7-2774-HXVG
14 Aug 202612:56
osv
osv
OSV
CGA-MJJR-GJMJ-R4GG
14 Aug 202614:34
osv
Rows per page
[
  {
    "vendor": "Go toolchain",
    "product": "cmd/go",
    "collectionURL": "https://pkg.go.dev",
    "packageName": "cmd/go",
    "versions": [
      {
        "version": "0",
        "lessThan": "1.25.13",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "1.26.0-0",
        "lessThan": "1.26.6",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "1.27.0-0",
        "lessThan": "1.27.0-rc.3",
        "status": "affected",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "golang.org/x/mod",
    "product": "golang.org/x/mod/sumdb",
    "collectionURL": "https://pkg.go.dev",
    "packageName": "golang.org/x/mod/sumdb",
    "versions": [
      {
        "version": "0",
        "lessThan": "0.40.0",
        "status": "affected",
        "versionType": "semver"
      }
    ],
    "programRoutines": [
      {
        "name": "Client.Lookup"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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03 Sep 2026 16:37Current
5.5Medium risk
Vulners AI Score5.5
EPSS0.00298
SSVC
126