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TI-2026-75331 Aliases CVE-2026-88755GHSA-2vx4-m2rp-32rx

Automatic MCP server connections in Z.ai ZCode allow code execution

Priority HIGH 69CWE-200Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Information disclosure, Security bypass, Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-200, CWE-284 and CWE-78.

Summary

Z.ai ZCode v3.11.2.6792 automatically establishes connections to MCP servers declared in a repository's workspace configuration. A flaw of the OS command injection type (CWE-78) may let an attacker run arbitrary code when a user opens a crafted repository.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Z.ai ZCode v3.11.2.6792 was discovered to automatically establish connections with MCP servers declared inside a repository's workspace configuration, possibly allowing attackers to execute arbitrary code via opening a crafted repository.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0021 11th percentileScored 2026-11-07
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
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Z.ai ZCode.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-88755
  2. 2026-10-18 CVSS score added · CISA ADP
  3. 2026-10-18 Weakness changed · CISA ADP
  4. 2026-10-18 CISA SSVC decision points changed
  5. 2026-10-18 Priority changed: LOW → HIGH
  6. 2026-10-18 Alias added: GHSA-2vx4-m2rp-32rx

References

Other 3

Sources

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