CriticalVulnerabilityLLM-specific

CVE-2026-59726: Ruflo unauthenticated MCP bridge endpoints allow command execution

Source: NVD(opens in a new tab)
Identifier: CVE-2026-59726
Published: July 9, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 3.0%

Summary

CVE-2026-59726 affects Ruflo, an agent meta-harness for Claude Code and Codex, before version 3.16.3. The default docker-compose deployment exposed the MCP bridge POST /mcp and POST /mcp/:group endpoints without authentication. An unauthenticated network attacker could invoke tools/call to terminal_execute, obtain a shell in the bridge container, read provider API keys, and poison AgentDB learning-store patterns.

Mitigation

Fixed in version 3.16.3.

Details

Scores and exploitation

CVSS score: 10(critical)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector: network
Attack complexity: low
Privileges required: none
User interaction: none
EPSS: 3.0%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on October 12, 2026.
Disclosure date: July 9, 2026

Weaknesses and techniques

Weakness (CWE): CWE-78
CWE-306
CWE-942
Attack pattern (CAPEC): CAPEC-115
CAPEC-88

Classification

Attack type: Other
Attack sophistication: Trivial
AI component targeted: Agent
Impact: Confidentiality,
Integrity,
Availability
Labels: security,
industry

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-59726

First tracked: July 9, 2026 at 08:10 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 90% (self-assessed)

Summary

Mitigation

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