CVE-2026-48105

Arc is an open, SQL-native time-series database for telemetry. Prior to version 26.06.1, Arc Enterprise's Raft FSM (`internal/cluster/raft/fsm.go:applyRegisterFile`) accepts attacker-chosen file paths in manifest-registration proposals without validating them against the configured storage backend. The only check is that the path is non-empty. There is no parent-traversal (`..`) rejection, no allowlist of legitimate prefixes, no scheme restriction (`s3://` vs local), and no length bound. This is fixed in 2026.06.1. Some workarounds are available. Restrict cluster network access to known-trusted peers via strict firewall rules, audit the cluster manifest for unexpected paths (any path not matching the configured storage backend root is suspect), and/or disable cluster mode until the fix is available.

CVSS

No CVSS.

References

Link	Resource
https://github.com/Basekick-Labs/arc/security/advisories/GHSA-f85q-mvg8-qf37

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-21 23:16

Updated : 2026-09-09 21:06

NVD link : CVE-2026-48105

Mitre link : CVE-2026-48105

CVE.ORG link : CVE-2026-48105

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-345

Insufficient Verification of Data Authenticity

CWE-913

Improper Control of Dynamically-Managed Code Resources

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