TI-2026-06660 Aliases CVE-2026-7574 GHSA-g2fx-c284-xq7h

Anthropic Claude Desktop Cowork VM Image Contents Not Validated Before Use

LOW 38CWE-353Published 2026-06-23 · Updated 2026-06-24

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · Low
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Anthropic Claude Desktop Cowork VM image handling (confirmed across v1.1348.0 through v1.2278.0, including v1.1348.0, v1.1617.0, and v1.2278.0) validates only file presence and a version marker string before booting rootfs.img, but does not verify image content integrity at time-of-use. A local attacker with unprivileged code execution as the victim macOS user can modify the VM root filesystem image and have it trusted on subsequent Cowork VM boots, enabling persistent arbitrary code execution in the VM and access to host-mounted directories. The estimated CWE mapping is CWE-353 (Missing Support for Integrity Check).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00115 1st 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: None
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

Vendor	Product	Affected versions	Fixed in	Status	Source
anthropics	Claude Desktop Cowork	1.1348.0 – 1.2278.0	—	No fix listed	CNA

Claude Desktop Cowork Vendoranthropics Affected 1.1348.0 – 1.2278.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-7574
2026-10-03 Alias added: GHSA-g2fx-c284-xq7h

References

Advisory 1

https://takeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000001110111111101011111111110000000000000000000000000000000000000000000000000000001010

Other 1

https://cfp.recon.cx/recon-2026/talk/DZUQYU/

TI-2026-79288 Out-of-bounds write in Google Brotli decoder KEVCVSS 4.0CRITICAL 9.2
TI-2026-00421 MCP TypeScript SDK UriTemplate Exploded Array Pattern ReDoS CVSS 4.0HIGH 8.7
TI-2025-40558 Claude Code Command Validation Bypass Allows Arbitrary Code Execution CVSS 4.0HIGH 8.7
TI-2025-36683 Claude Code vulnerable to arbitrary code execution caused by maliciously configured git email CVSS 4.0HIGH 8.7
TI-2025-24240 Anthropic Slack MCP Server Data Exfiltration via Link Unfurling CVSS 4.0CRITICAL 9.3
TI-2025-32918 Claude Code IDE extensions allow websocket connections from arbitrary origins CVSS 4.0HIGH 8.8

See all 46 →

Sources

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