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CVE-2026-56864 Ignore unrelated, unauthenticated hashes in Lookup in golang.org/x/mod/sumdb

🗓️ 13 Aug 2026 21:58:53Reported by GoType 
cvelist
 cvelist
🔗 www.cve.org👁 37 Views

Malicious GOSUMDB can serve arbitrary module content not in the transparency log to Go clients.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
osv
OSV
MINI-W5V5-HCX9-4QFW
19 Aug 202613:47
osv
osv
OSV
MINI-W5WQ-749R-37XM
14 Aug 202617:48
osv
osv
OSV
MINI-W63R-8R9R-WC54
19 Aug 202613:48
osv
osv
OSV
MINI-W64W-HRF8-2C7X
19 Aug 202613:47
osv
osv
OSV
MINI-W65M-4XP4-43XH
19 Aug 202613:48
osv
osv
OSV
MINI-W6W7-VMX3-82HJ
19 Aug 202601:51
osv
osv
OSV
MINI-W6XM-M9MW-Q6W5
15 Aug 202601:49
osv
osv
OSV
MINI-W72J-5RMW-W939
19 Aug 202613:47
osv
osv
OSV
MINI-W753-3FFM-P2HG
16 Aug 202619:25
osv
osv
OSV
MINI-W76Q-X82F-2V29
19 Aug 202613:48
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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