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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👁 15 Views

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

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-56864
13 Aug 202621:58
attackerkb
cve
CVE
CVE-2026-56864
13 Aug 202621:58
cve
debiancve
Debian CVE
CVE-2026-56864
13 Aug 202621:58
debiancve
euvd
EUVD
EUVD-2026-58514
13 Aug 202621:58
euvd
nvd
NVD
CVE-2026-56864
13 Aug 202622:17
nvd
osv
OSV
DEBIAN-CVE-2026-56864
13 Aug 202622:17
osv
osv
OSV
GO-2026-6180 Ignore unrelated, unauthenticated hashes in Lookup in golang.org/x/mod/sumdb
13 Aug 202621:43
osv
ptsecurity
Positive Technologies
PT-2026-71900
13 Aug 202600:00
ptsecurity
[
  {
    "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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