Medium 5.0Published Oct 25, 2026

CVE-2026-116187Rclone v1.68.0 before v1.75.2 Authorization Bypass in serve s3 Multipart Uploads

Updated under an hour ago (Oct 28, 2026, 2:40 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for rclone

Exploited in the last 30 days

Rclone from v1.68.0 before v1.75.2 contains an authorization bypass vulnerability in serve s3 --auth-proxy that allows authenticated tenants to manipulate other tenants' multipart uploads by referencing their upload IDs. Attackers who learn a victim's bucket, object, and upload ID can inject parts, complete, or abort in-flight uploads and view upload and object metadata across tenants.

CVSS: 5.0 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Oct 26, 2026
First seen by InfoSec Signals: Oct 25, 2026

Affected products

Affected products

rclone rclone rclone:rclone (from the name)	from 1.68.0 before 1.75.2; 1.75.2 not affected	CNA record
rclone rclone rclone:rclone	from 1.68.0 before 1.75.2	NVD

References

References

https://github.com/rclone/rclone/security/advisories/GHSA-35g6-9fjv-rmx5	vendor-advisory
https://www.vulncheck.com/advisories/rclone-1.68.0-before-1.75.2-authorization-bypass-in-serve-s3-multipart-uploads	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.