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    CVE-2026-79781

    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.

    Published:Aug 25, 2026
    Last Modified:Aug 25, 2026
    EPS:Aug 25, 2026
    EPSS Score:
    CVSS Score:6.5

    Affected Products

    Vendor
    Rclone
    Product
    Rclone

    Exploits

    No exploit reference

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    CVE-2026-79782 (CVSS 9.3) — rclone before 1.74.4 fails to strip the X-Amz-Security-Token header when an S3 redirect changes scheme from HT…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High