CVE-2026-79779

medium

Description

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.

References

https://www.vulncheck.com/advisories/rclone-before-webdav-credential-exposure-via-https-to-http-redirect

https://github.com/rclone/rclone/security/advisories/GHSA-h4mf-4v27-hggj

Details

Source: Mitre, NVD

Published: 2026-08-25

Updated: 2026-08-25

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:A/AC:H/Au:N/C:C/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Severity: Medium

CVSS v4

Base Score: 6

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

Severity: Medium

EPSS

EPSS: 0.00108