CVE-2026-79779

MEDIUM 5.3

rclone before v1.75.0 WebDAV Credential Exposure via HTTPS-to-HTTP Redirect

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-319
Vendor	rclone
Product	rclone
Published	Aug 25, 2026

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CVSS v3 Breakdown

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

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

rclone / rclone

0 < 1.75.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/rclone/rclone/security/advisories/GHSA-h4mf-4v27-hggj vulncheck.com: https://www.vulncheck.com/advisories/rclone-before-webdav-credential-exposure-via-https-to-http-redirect

Credits

🔍 cyberlanc3r ncw