CVE-2026-79783: low-severity vulnerability in rclone
rclone before 1.74.4 Privilege Escalation via setuid Metadata
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2epss 0.2%
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.
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Affected products
rclone · rcloneRelated CVEs — rclone
In the same product, most dangerous first.
CVE-2026-41176CRITICALRclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command executionEPSS 32.7%CVE-2026-41179CRITICALRClone: Unauthenticated operations/fsinfo allows attacker-controlled backend instantiation and local command executionEPSS 8.6%CVE-2026-49980CRITICALRclone: Unauthenticated command execution in `rclone rcd --rc-serve` via inline remote instantiation, bypassing CVE-2026-41179 fixEPSS 0.8%CVE-2026-88045HIGHrclone: S3 multipart declared-length memory exhaustionEPSS 0.6%CVE-2026-71310MEDIUMrclone: Unbounded HTTP CONNECT Response Headers Can Exhaust rclone MemoryEPSS 0.6%CVE-2026-59733HIGHrclone `serve restic --private-repos` authorization bypass: `..` in the URL path lets an authenticated user read, overwrite and delete other users' repositoriesEPSS 0.6%