CVE-2026-79776: rclone before 1.75.0 Authentication Bypass via pprof

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-25 · updated 2026-09-10
Weakness: CWE-200

Description

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.

Affected products

rclone: before 1.75.0 — fixed in 1.75.0

How to fix

Upgrade to a fixed version: rclone 1.75.0. Check the vendor advisory for mitigations.

References

https://github.com/rclone/rclone/security/advisories/GHSA-mfvx-7rcj-9m5g
https://www.vulncheck.com/advisories/rclone-before-authentication-bypass-via-pprof
https://github.com/rclone/rclone/security/advisories/GHSA-mfvx-7rcj-9m5g

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