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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👁 43 Views

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

Related
Affected
Refs
ReporterTitlePublishedViews
Family
osv
OSV
MINI-WHMJ-3HCC-7JPF
19 Aug 202613:48
–osv
osv
OSV
MINI-WHQW-9H97-88RF
19 Aug 202613:47
–osv
osv
OSV
MINI-WHWW-GJ7R-VGC3
19 Aug 202613:47
–osv
osv
OSV
MINI-WJ2W-RCH3-95V7
19 Aug 202615:33
–osv
osv
OSV
MINI-WJ88-7QXR-4WCM
19 Aug 202614:07
–osv
osv
OSV
MINI-WJ9C-7F92-7GGF
19 Aug 202613:48
–osv
osv
OSV
MINI-WJGP-MRX4-RM8G
19 Aug 202613:47
–osv
osv
OSV
MINI-WM39-WRJ8-6WH7
16 Aug 202619:25
–osv
osv
OSV
MINI-WMP7-52G4-8PCC
19 Aug 202616:36
–osv
osv
OSV
MINI-WMQH-PHHQ-WVWF
19 Aug 202614:21
–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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