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TI-2026-56462 Aliases CVE-2026-81835GHSA-q2jq-8pm2-fj8h

RooCodeInc Roo-Code MCP Integration Trust Model malicious_mcp_server.py fetch_instructions code injection

Priority MEDIUM 56CWE-74Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

A security vulnerability has been detected in RooCodeInc Roo-Code up to 3.51.1. This affects the function fetch_instructions of the file malicious_mcp_server.py of the component MCP Integration Trust Model. The manipulation leads to code injection. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. Multiple isses were reported to the vendor beforehand. They explain, that "they all apply to Roo Code, a project we no longer support - the repository was archived a while ago, and we don't encourage anyone to use it." This vulnerability only affects products that are no longer supported by the maintainer.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.003 22nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
RooCodeIncRoo-Code3.51.0; 3.51.1—No fix listedCNA
  • Roo-Code VendorRooCodeInc Affected 3.51.0; 3.51.1 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:roocodeinc:roo-code:*:*:*:*:*:*:*:*———
  • cpe:2.3:a:roocodeinc:roo-code:*:*:*:*:*:*:*:* Versions — — ·—

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-81835
  2. 2026-10-03 Alias added: GHSA-q2jq-8pm2-fj8h

References

Exploit 1

  • TI-2026-73422 Auto-approve bypass in Roo-Code via glob and command substitution CVSS 4.0HIGH 7.7
  • TI-2026-73421 Auto-approve bypass in Roo-Code runs denied shell commands CVSS 4.0HIGH 7.7
  • TI-2026-73419 Auto-approve bypass in Roo-Code via redirect operator stripping CVSS 4.0HIGH 7.7
  • TI-2026-56894 Roo-Code 3.54.0 Auto-Approve Bypass via Shell Parser Word-Boundary Mismatch CVSS 4.0HIGH 7.7
  • TI-2026-45057 Roo Code 3.54.0 Command Injection via Parameter Expansion Parsing CVSS 4.0HIGH 7.7
  • TI-2025-34186 Roo Code Lacks Line Break Validation in its Command Execution Tool CVSS 3.1HIGH 7.8
See all 24 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences