CVE-2026-79783

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{"bugzilla": {"description": "github.com/rclone/rclone: rclone: Privilege Escalation via setuid/setgid metadata", "id": "2523574", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2523574"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.6", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-281", "details": ["rclone before 1.74.4 fails to mask special permission bits when applying source-supplied mode metadata in the local backend, allowing attackers to set setuid/setgid bits on attacker-controlled files. When copying with metadata preservation from an untrusted remote, attackers can plant a setuid binary that escalates privileges to root if rclone runs as root, or to the service account user otherwise.", "A flaw was found in rclone. This vulnerability allows a remote attacker to escalate privileges by manipulating file metadata. When copying files with metadata preservation from an untrusted source, rclone fails to properly mask special permission bits. This oversight enables an attacker to set setuid or setgid bits on their controlled files, potentially leading to privilege escalation to root or the service account user if rclone is running with elevated permissions."], "mitigation": {"lang": "en:us", "value": "Use rclone with the --no-update-modtime flag or explicitly strip setuid/setgid bits after syncing files from untrusted sources. Avoid syncing executable files from untrusted remotes to locations where they may be executed by privileged users."}, "name": "CVE-2026-79783", "package_state": [{"cpe": "cpe:/a:redhat:cryostat:4", "fix_state": "Fix deferred", "package_name": "cryostat/cryostat-storage-rhel9", "product_name": "Cryostat 4"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Fix deferred", "package_name": "rhacm2/volsync-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}], "public_date": "2026-08-25T15:16:11Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-79783\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-79783\nhttps://github.com/rclone/rclone/security/advisories/GHSA-945v-v9p3-v5xw\nhttps://www.vulncheck.com/advisories/rclone-before-privilege-escalation-via-setuid-metadata"], "statement": "A flaw was found in rclone. When syncing files, rclone preserves setuid and setgid metadata bits from the source. An attacker who controls the source of a sync operation can craft files with setuid/setgid bits set, which when synced to the destination may result in privilege escalation if the synced files are subsequently executed.", "threat_severity": "Low"}

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