{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-116189", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-25T12:27:12.266Z", "datePublished": "2026-10-25T13:20:25.148Z", "dateUpdated": "2026-10-25T13:20:25.148Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-25T13:20:25.148Z"}, "datePublic": "2026-10-09T00:00:00.000Z", "title": "rclone 1.55.0 before 1.75.2 selfupdate Signature Verification Bypass via SHA256SUMS", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Verification of Cryptographic Signature", "cweId": "CWE-347", "type": "CWE"}]}], "affected": [{"vendor": "rclone", "product": "rclone", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/rclone/rclone", "versions": [{"version": "1.55.0", "status": "affected", "versionType": "semver", "lessThan": "1.75.2"}, {"version": "1.75.2", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*", "versionStartIncluding": "1.55.0", "versionEndExcluding": "1.75.2"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "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", "attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-w33h-3qgq-8mv8)"}, {"name": "VulnCheck Advisory: rclone 1.55.0 before 1.75.2 selfupdate Signature Verification Bypass via SHA256SUMS", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/rclone-1.55.0-before-1.75.2-selfupdate-signature-verification-bypass-via-sha256sums"}], "credits": [{"lang": "en", "value": "Kushalkhemka", "type": "finder"}, {"lang": "en", "value": "ncw", "type": "finder"}, {"lang": "en", "value": "mayank-jangid-moon", "type": "finder"}, {"lang": "en", "value": "skigeek16", "type": "finder"}, {"lang": "en", "value": "opensec-intelligence", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/rclone/rclone", "product": "rclone", "vendor": "rclone", "versions": [{"lessThan": "1.75.2", "status": "affected", "version": "1.55.0", "versionType": "semver"}, {"status": "unaffected", "version": "1.75.2", "versionType": "semver"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-116189", "lastModified": "2026-10-26T14:08:16.917", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "[email protected]", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-10-25T14:16:59.120", "references": [{"source": "[email protected]", "url": "https://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8"}, {"source": "[email protected]", "url": "https://www.vulncheck.com/advisories/rclone-1.55.0-before-1.75.2-selfupdate-signature-verification-bypass-via-sha256sums"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "github.com/rclone/rclone: rclone: Arbitrary code execution via self-update signature verification bypass", "id": "2560412", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2560412"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-347", "details": ["A flaw was found in rclone. A remote attacker with the ability to tamper with the release distribution path can bypass cryptographic signature verification during the self-update process. By prepending an unsigned checksum before the signed checksum block, the attacker can cause the application to install a malicious binary, leading to arbitrary code execution."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-116189", "package_state": [{"cpe": "cpe:/a:redhat:cryostat:4", "fix_state": "Affected", "package_name": "cryostat/cryostat-storage-rhel9", "product_name": "Cryostat 4"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Affected", "package_name": "rhacm2/volsync-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}], "public_date": "2026-10-25T13:20:25Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-116189\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-116189\nhttps://github.com/rclone/rclone/security/advisories/GHSA-w33h-3qgq-8mv8\nhttps://www.vulncheck.com/advisories/rclone-1.55.0-before-1.75.2-selfupdate-signature-verification-bypass-via-sha256sums"], "statement": "This vulnerability is rated as Important because an attacker capable of manipulating upstream distribution traffic could achieve arbitrary code execution by bypassing signature checks during standalone binary installation. In Red Hat products such as Red Hat Advanced Cluster Management and Cryostat, rclone is shipped within container images where component lifecycle is governed entirely by container platform registries. Red Hat automated workflows do not execute standalone self-replacement routines, meaning typical containerized deployments are not exposed in standard configurations.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.55.0,1.75.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[1.75.2,*]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "rclone", "source": "cna", "vendor": "rclone"}, "product": "rclone", "vendor": "rclone"}], "created": "2026-10-25T17:15:15.613880+00:00", "updated": "2026-10-25T17:45:15.466820+00:00", "vendors": ["rclone", "rclone$PRODUCT$rclone"]}