rclone 1.55.0 before 1.75.2 selfupdate Signature Verification Bypass via SHA256SUMS

{
  "id": "5871406cdcbeb41314c0f28708fc3fde6ab437eccded3d0ab4936cb82aa3b0b9",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116189",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "rclone 1.55.0 before 1.75.2 selfupdate Signature Verification Bypass via SHA256SUMS",
    "summary": "rclone from 1.55.0 before 1.75.2 contains a signature verification bypass in stable selfupdate that trusts checksums from unsigned bytes preceding the PGP-clearsigned SHA256SUMS block. Attackers controlling the release distribution path can prepend an unsigned checksum line matching a malicious archive, causing selfupdate to install an attacker-controlled rclone executable.",
    "evidence": "cve:CVE-2026-116189",
    "products": [
      {
        "name": {
          "value": "rclone",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-116189",
      "aliases": [
        "CVE-2026-116189"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 7.7,
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "userInteraction": "PASSIVE",
            "attackComplexity": "HIGH",
            "attackRequirements": "PRESENT",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH"
          }
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 7.5,
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "integrityImpact": "HIGH",
            "userInteraction": "REQUIRED",
            "attackComplexity": "HIGH",
            "availabilityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "HIGH"
          }
        }
      ],
      "affected": [
        {
          "vendor": "rclone",
          "product": "rclone",
          "versions": [
            {
              "status": "affected",
              "version": "1.55.0",
              "lessThan": "1.75.2",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "1.75.2",
              "versionType": "semver"
            }
          ],
          "packageURL": "pkg:golang/github.com/rclone/rclone",
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-25T13:20:25.148Z",
      "provider": "cve",
      "references": [
        "https://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8",
        "https://www.vulncheck.com/advisories/rclone-1.55.0-before-1.75.2-selfupdate-signature-verification-bypass-via-sha256sums"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
          "shortName": "VulnCheck",
          "dateUpdated": "2026-10-25T13:20:25.148Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116189",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 146794,
  "published_at": "2026-10-25T13:20:25.148+00:00"
}