Information disclosure in Rclone
CVE-2026-116193
Rclone from 1.64.0 before 1.75.2 contains an authentication bypass vulnerability in serve webdav that lets unauthenticated attackers skip authentication by sending OPTIONS requests. Attackers can probe arbitrary paths and compare Allow header values to determine whether files or collections exist, enabling namespace enumeration.
Vulnerability class: Information Disclosure
Published .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/rclone/rclone/security/advisories/GHSA-gj73-fh6v-92fj (vendor-advisory)
- www.vulncheck.com/advisories/rclone-1.64.0-before-1.75.2-serve-webdav-authentic… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116193?
- CVE-2026-116193 is a medium-severity vulnerability in Rclone, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-10-25.
- How severe is CVE-2026-116193?
- Medium severity. CVSS v3 base score is 5.3 out of 10.