CVE-2026-79781rclone serve s3 Path Traversal via dot-dot object keys
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No exploitation reported and no EPSS estimate yet.
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rclone serve s3 before 1.74.4 contains a path traversal vulnerability that allows attackers to read and overwrite root-level files by using dot-dot segments in S3 object keys. Attackers can send requests with object keys like ../root-secret.txt to escape the bucket namespace and access files in the serve root directory.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Weakness (CWE)
- CWE-22
- 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
- Awaiting Analysis
- Record last updated
- Aug 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
rclone rclone rclone:rclone (from the name) | before 1.74.4; 1.74.4 not affected | CNA record |
References
- https://github.com/rclone/rclone/security/advisories/GHSA-8v25-v8p6-qf7vvendor-advisory
- https://www.vulncheck.com/advisories/rclone-serve-s3-path-traversal-via-dot-dot-object-keysthird-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.