CVE-2026-79779

rclone versions before v1.75.0 fail to reject transport downgrades in redirect handling, allowing Basic authorization and Cookie headers to be replayed over plaintext HTTP after same-host HTTPS-to-HTTP redirects. An on-path attacker observing the plaintext hop can capture and reuse credentials to perform WebDAV operations with the compromised account's permissions.

Scoring

Severity
MEDIUM
CVSS base score
6
CVSS vector
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS probability
0.11%
CWE
CWE-319
Published
2026-08-25
Last modified
2026-08-27

Affected products

Weakness type

Related vulnerabilities

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