CVE-2026-79776 rclone CVE debrief

Who should care

Defenders responsible for rclone deployments should assess their exposure and verify if their versions are vulnerable. They should also ensure that access to the /debug/pprof/cmdline endpoint is properly restricted.

Why it matters

CVE-2026-79776 is a medium-severity vulnerability in rclone that allows unauthenticated access to sensitive process information. Defenders should verify their deployments' versions and ensure proper access controls to mitigate potential exposure of backend credentials and elevation of privileges.

• Potential exposure of backend credentials
• Unauthenticated access to sensitive process information
• Possible elevation of privileges
• Need for verification of rclone version and endpoint access controls

Technical summary

The vulnerability in rclone before version 1.75.0 allows unauthenticated access to the /debug/pprof/cmdline endpoint, which can be used to retrieve sensitive process information, including backend credentials. This is possible because the pprof debug handler is mounted as its own router route, bypassing the authentication rule in the main handler. The vulnerability has a medium severity and can lead to potential exposure of backend credentials and elevation of privileges. Defenders should prioritize verifying if their rclone deployments are using a version prior to 1.75.0 and ensure that access to the /debug/pprof/cmdline endpoint is properly restricted.

Defensive priority

Defenders should prioritize verifying if their rclone deployments are using a version prior to 1.75.0 and ensure that access to the /debug/pprof/cmdline endpoint is properly restricted.

Recommended defensive actions

• Verify if rclone deployments are using a version prior to 1.75.0
• Restrict access to the /debug/pprof/cmdline endpoint
• Upgrade to rclone version 1.75.0 or later if vulnerable
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details about the vulnerability. However, the exact scope of affected deployments and the availability of backend credentials require further verification from the official sources.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.