CVE-2026-59726 | defend.network

What is CVE-2026-59726?

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.

CVSS10 NVD 3.1

SeverityCRITICAL

ExploitationNo exploitation reported

EPSS<1% · P36

Triage statusNo Known Exploit

ActionPatch within 48 hours

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

CWECWE-78

NVD published2026-07-09

NVD last modified2026-07-10

Timeline

2026-07-09Published to the U.S. National Vulnerability Database (NVD)
2026-07-10NVD record last updated
2026-07-30First covered in a defend.network daily briefing

Affected product

See advisory

Remediation Steps

Update Ruflo to version 3.16.3 or later immediately
Disable or isolate Ruflo deployments if immediate patching is not possible
Review audit logs for evidence of unauthenticated command execution
Reset any credentials or API keys that may have been exposed through compromised Ruflo instances
Implement network-level access controls to restrict Ruflo endpoint access to authenticated users

References

Referenced in our briefings & reports

Vulnerability Priority Report – Week 4 of July 2026 (July 27 – August 2)
Critical zero-days in Rails, Ruflo, VMware; Laundry Bear exploits Exchange OWA (2026-07-30)

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🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.