CVE-2026-71312

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{"affected": [{"affectedData": [{"product": "rclone", "vendor": "rclone", "versions": [{"status": "affected", "version": "< 1.75.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to v1.75.0, rclone interpolates remote SFTP paths into PowerShell hash commands in backend/sftp/sftp.go, and quoteOrEscapeShellPath escapes only ASCII apostrophe even though PowerShell treats U+2018, U+2019, U+201A, and U+201B as single-quote delimiters, allowing an attacker-controlled filename to terminate the intended path literal and append PowerShell statements that execute as the victim SSH account when server-side hashing is invoked. This issue is fixed in v1.75.0."}], "id": "CVE-2026-71312", "lastModified": "2026-11-03T23:17:53.807", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-71312", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-07T03:55:22.763900Z", "version": "2.0.3"}}]}, "published": "2026-08-05T21:16:58.867", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/rclone/rclone/commit/e122fba1a57641b63a580aa26c026903a84e2e88"}, {"source": "security-advisories@github.com", "url": "https://github.com/rclone/rclone/releases/tag/v1.75.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/rclone/rclone/security/advisories/GHSA-2m8m-jhrm-w6j2"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/rclone/rclone/security/advisories/GHSA-2m8m-jhrm-w6j2"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "github.com/rclone/rclone: rclone: Server-Side Command Execution via Malicious SFTP Filenames", "id": "2511773", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2511773"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.0", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-78", "details": ["A flaw was found in rclone, a command-line program for syncing files. This vulnerability allows a remote attacker to execute arbitrary commands on the server when processing SFTP paths. By crafting a malicious filename that uses specific Unicode single-quote characters, an attacker can bypass security measures and inject PowerShell commands. This can lead to unauthorized command execution under the victim's SSH account during server-side hashing operations."], "mitigation": {"lang": "en:us", "value": "avoid connecting rclone to SFTP servers\nthat use PowerShell as their SSH command shell, or disable server-side hashing\nwith --sftp-disable-hashcheck. Do not process files from untrusted sources on\nSFTP remotes backed by PowerShell."}, "name": "CVE-2026-71312", "package_state": [{"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Not affected", "package_name": "rhacm2/volsync-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}], "public_date": "2026-08-05T20:37:49Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-71312\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-71312\nhttps://github.com/rclone/rclone/commit/e122fba1a57641b63a580aa26c026903a84e2e88\nhttps://github.com/rclone/rclone/releases/tag/v1.75.0\nhttps://github.com/rclone/rclone/security/advisories/GHSA-2m8m-jhrm-w6j2"], "statement": "This is an Important vulnerability in rclone, a command-line file synchronization program, that allows for server-side command execution. An attacker can craft malicious SFTP filenames containing Unicode smart quotes to inject and execute arbitrary PowerShell commands on the system running rclone. This occurs when server-side hashing operations are invoked, potentially leading to compromise of the victim's SSH account.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.75.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "rclone", "source": "cna", "vendor": "rclone"}, "product": "rclone", "vendor": "rclone"}], "created": "2026-08-05T22:00:14.919137+00:00", "updated": "2026-08-05T22:45:03.792131+00:00", "vendors": ["rclone", "rclone$PRODUCT$rclone"]}