Lucene search
+L

CVE-2026-56865 Fix transparency log tile verification bypass in golang.org/x/mod/sumdb/tlog

🗓️ 13 Aug 2026 21:58:53Reported by GoType 
cvelist
 cvelist
🔗 www.cve.org👁 11 Views

Malicious GOPROXY could forge sumdb tiles to bypass GOSUMDB and poison local module cache.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-56865
13 Aug 202621:58
attackerkb
cve
CVE
CVE-2026-56865
13 Aug 202621:58
cve
euvd
EUVD
EUVD-2026-58513
13 Aug 202621:58
euvd
nvd
NVD
CVE-2026-56865
13 Aug 202622:17
nvd
osv
OSV
GO-2026-6179 Fix transparency log tile verification bypass in golang.org/x/mod/sumdb/tlog
13 Aug 202621:43
osv
[
  {
    "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/tlog",
    "collectionURL": "https://pkg.go.dev",
    "packageName": "golang.org/x/mod/sumdb/tlog",
    "versions": [
      {
        "version": "0",
        "lessThan": "0.40.0",
        "status": "affected",
        "versionType": "semver"
      }
    ],
    "programRoutines": [
      {
        "name": "tileHashReader.ReadHashes"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation