CVE-2026-59726 | THREATINT

Description

Ruflo is an agent meta-harness for Claude Code and Codex. Prior to 3.16.3, ruflo's default docker-compose deployment exposed the MCP bridge POST /mcp and POST /mcp/:group endpoints without authentication, allowing an unauthenticated network attacker to invoke tools/call to terminal_execute, obtain a shell in the bridge container, read provider API keys, and poison AgentDB learning-store patterns. This issue is fixed in version 3.16.3.

PUBLISHED Reserved 2026-07-06 | Published 2026-07-09 | Updated 2026-07-09 | Assigner GitHub_M

CRITICAL: 10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Problem types

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CWE-306: Missing Authentication for Critical Function

CWE-942: Permissive Cross-domain Policy with Untrusted Domains

Product status

< 3.16.3

affected

References

github.com/.../ruflo/security/advisories/GHSA-c4hm-4h84-2cf3

github.com/ruvnet/ruflo/pull/2521

github.com/...ommit/d00a0a40cd8bdbca877ac7f675f416bdc69accd1

github.com/ruvnet/ruflo/releases/tag/v3.16.3

cve.org (CVE-2026-59726)

nvd.nist.gov (CVE-2026-59726)

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