Information disclosure in Rclone
CVE-2026-79776
rclone before 1.75.0 mounts the pprof debug handler as its own router route, bypassing the fail-closed authentication rule in the main handler. Attackers can access the /debug/pprof/cmdline endpoint unauthenticated to retrieve the full process argv including backend credentials.
Vulnerability class: Information Disclosure
Published · last modified .
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
EPSS: 0.004 (29.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/rclone/rclone/security/advisories/GHSA-mfvx-7rcj-9m5g (vendor-advisory)
- www.vulncheck.com/advisories/rclone-before-authentication-bypass-via-pprof (third-party-advisory)
Frequently asked questions
- What is CVE-2026-79776?
- CVE-2026-79776 is a medium-severity vulnerability in Rclone, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-08-25.
- How severe is CVE-2026-79776?
- Medium severity. CVSS v3 base score is 5.3 out of 10.