by Kastro
Paper/Archive/CVE-2026-59726

CVE-2026-59726

ruvnet ruflo — Ruflo: Unauthenticated RCE in MCP bridge default docker-compose deployment

EPSS 3%CVSS 10.0
critical.is priorityof 100
48
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 87.4.874 × 2017.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
ruflo< 3.16.3–CNA

Scores by source

GitHub_M (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/ruvnet/ruflo/security/advisories/GHSA-c4hm-4h84-2cf3refgithub.com/ruvnet/ruflo/pull/2521refgithub.com/ruvnet/ruflo/commit/d00a0a40cd8bdbca877ac7f675f416bdc69accd1refgithub.com/ruvnet/ruflo/releases/tag/v3.16.3