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TI-2026-09013 Aliases CVE-2026-10277GHSA-37j4-5858-49mq

j3k0 mcp-google-workspace MCP Gmail Tool gmail.ts saveToDisk access control

Priority MEDIUM 57CWE-266Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Privilege escalation, Security bypass
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-266 and CWE-284.

Summary

A vulnerability was found in j3k0 mcp-google-workspace up to 831790e7d5c2663325733d9f5579cc339a267c4c. This issue affects the function saveToDisk of the file src/tools/gmail.ts of the component MCP Gmail Tool. Performing a manipulation results in improper access controls. It is possible to initiate the attack remotely. The exploit has been made public and could be used. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The patch is named 89c091ecf8b9f9c7291d1af0b1966e271f86551c. It is suggested to install a patch to address this issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00276 20th 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
j3k0mcp-google-workspace831790e7d5c2663325733d9f5579cc339a267c4c—No fix listedCNA
  • mcp-google-workspace Vendorj3k0 Affected 831790e7d5c2663325733d9f5579cc339a267c4c Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:j3k0:mcp-google-workspace:*:*:*:*:*:*:*:*——j3k0
  • cpe:2.3:a:j3k0:mcp-google-workspace:*:*:*:*:*:*:*:* Versions — — ·j3k0

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-10277
  2. 2026-10-03 Alias added: GHSA-37j4-5858-49mq

References

Exploit 1

Patch 2

Other 1

Sources

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